WO2004072556A1 - Vorrichtung mit einer mikrorauen beschichtung - Google Patents
Vorrichtung mit einer mikrorauen beschichtung Download PDFInfo
- Publication number
- WO2004072556A1 WO2004072556A1 PCT/EP2004/001493 EP2004001493W WO2004072556A1 WO 2004072556 A1 WO2004072556 A1 WO 2004072556A1 EP 2004001493 W EP2004001493 W EP 2004001493W WO 2004072556 A1 WO2004072556 A1 WO 2004072556A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fine structure
- layer
- crystal zones
- crystal
- zones
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/005—Coatings for ovens
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
Definitions
- the invention is based on a device with a micro-rough coating according to the preamble of claim 1.
- a self-cleaning surface for a cooking appliance with a micro-rough coating is also known, which has a self-cleaning effect, the so-called lotus effect, due to its surface structure.
- the surface is coated with a catalytically active metal overdrawn.
- DE 100 16 485 A1 also discloses a micro-rough layer on a substrate, in which the roughness is generated by the incorporation of structure-forming particles. The self-cleaning property of this surface can be increased by an additional coating of a water repellent.
- the object of the invention is to further develop a generic device, in particular with regard to the good cleanability with good mechanical stability of the micro-rough surface.
- the invention is based on a device, in particular a cooking appliance with a cooking space, with a substrate on which a layer with a micro-rough surface is arranged. It is proposed that the layer be an enamel layer with crystal zones of crystalline phase crystallized from enamel embedded in a glass flow, crystal zones forming a fine structure and a rough superstructure on the surface of the layer.
- the fine structure and the superstructure are two structures that can be viewed separately and, like trees (fine structure) on hills (superstructure), are connected with each other.
- the crystalline phase has long-range crystals that form more than 90 percent by weight of the crystal zones.
- Transition zones can be arranged surrounding the crystal zones, which comprise a mixture of a crystalline phase and a glass-like phase.
- Such a transition zone can be a continuous transition from the crystal zone in an area with predominantly glass flow. With such a continuous transition, the crystal zones are particularly firmly embedded in the glass flow.
- the crystals are formed by the crystallization of oxidic phases from the enamel. Such crystallization can be achieved by segregating substances in the enamel at the baking temperature. It is also possible to achieve crystallization by precipitation crystallization.
- the cooling process can produce crystalline precipitates.
- the production of such e-mails is well known from textbooks, for example from Armin Patzold, Helmut Fröschmann: “Email and Enamelling Technology”, Springer Verlag, Berlin 1987, chapter 3.5 and chapter 22.6.
- the crystalline phase can be made from one or more of the substances TiO 2 , CeO 2 or cerium silicate, but other compounds which appear suitable to the person skilled in the art are also conceivable.
- the crystal zones comprise larger first crystal zones and smaller second crystal zones, the smaller second crystal zones in regions between first crystal zones merely creating a fine structure on the surface.
- the second crystal zones are smaller than the first crystal zones and create a roughness in the otherwise mostly smooth areas around the first crystal zones, which counteracts the build-up of food components.
- the fine structure expediently forms elevations with valleys in between, the central shape of the elevations being more convex than the central shape of the valleys being concave.
- This structure is particularly water-repellent and the slightly concave shape of the valleys counteracts clogging of the valleys, for example by sticking or burning residues.
- the elevations form convex shapes, whereas the areas around the elevations are flat or oblique, depending on the location within the superstructure, or are slightly concave in the case of closely spaced elevations. Injected undesired substances therefore find little hold between the elevations.
- the superstructure advantageously has an average profile height of 10 ⁇ m to 50 ⁇ m, in particular of 10 ⁇ m to 30 ⁇ m, and the fine structure has an average profile height he from 0.1 ⁇ m to 5 ⁇ m, in particular from 0.5 ⁇ m to 3 ⁇ m.
- the surface is sufficiently anti-adhesive to ensure a sufficient beading effect of liquids from the surface, and it has good removability of injected fat, oil or starch-containing substances.
- the superstructure having a ratio of average profile height to average distance between adjacent profile tips of 0.1 to 3.
- the fine structure can also be designed particularly advantageously in a ratio of average profile height to average distance between adjacent profile tips of 0.3 to 10 in such a way that this compromise can be achieved particularly easily.
- a dirt-repellent further layer with an anti-adhesion agent in particular a hydrophobizing agent, is applied to the layer.
- an anti-adhesion agent in particular a hydrophobizing agent
- Such a layer supports the anti-adhesive properties of the micro-rough surface without the surface having to be enlarged, as a result of which a slight solubility of injected food residues would possibly be counteracted.
- A in particular a siloxane is expediently applied as the antiadhesive.
- the coating of the micro-rough surface with such an anti-adhesive medium leads to a significantly greater reduction in the wettability with liquids.
- the surface has a significantly improved cleaning property.
- the anti-adhesive medium can be applied by dipping, misting, spraying or rubbing in and is preferably baked into the enamel layer at temperatures between 250 ° C and 350 ° C.
- a further advantage is achieved in that the antiadhesive agent is applied thicker in the valleys of the fine structure than at the tips of the fine structure. As a result, the additional layer is removed particularly little during mechanical processing of the surface. The anti-adhesive is also protected in the valleys, which ensures that the anti-adhesive is well anchored to the surface.
- the anti-adhesive agent is advantageously between 0.1 ⁇ m and 2.5 ⁇ m thick in the valleys of the fine structure and between 5 nm and 0.5 ⁇ m thick at the tips of the fine structure. As a result, particularly good abrasion resistance is achieved while the hydrophobic structure of the micro-rough structure is at the same time highly hydrophobic.
- the thickness of the anti-adhesive in the valleys of the fine structure is between 25% and 75%, the average profile height of the fine structure.
- the valleys of the fine structure are filled with the anti-adhesive, the less food residues can stick to the valleys and burn in there. If the fill level of the valleys is too high, the micro-roughness of the surface is reduced to such an extent that the cleanability of the surface is reduced to an unsatisfactory degree. With a degree of filling between 25% and 75% and good cleanability of the micro-rough surface, the build-up of food residues in the valleys is effectively counteracted.
- the micro-rough surface can be coated very easily, for example by rubbing in with the anti-adhesive.
- the further layer can also be refreshed or regenerated as part of a customary cleaning or maintenance action. In the event of heavy inadvertent soiling, staining or damage, the layer can be removed using simple means, such as, for example. B. oven spray can be removed. Then a new coating is applied, for example by rubbing in, and the initial state and initial effect are completely restored.
- FIG. 2 shows a section through part of a crystal zone
- FIG. 3 shows a section through an anti-adhesive layer on the enamel layer
- FIG. 1 shows an enamel layer 10 on a metallic substrate 12.
- the enamel layer 10 and the substrate 12 are part of the wall of a cooking chamber of a cooker.
- the enamel layer 10 has a glass flow 14 with embedded crystal zones 16, which consist of crystalline phase crystallized from enamel.
- FIG. 1 shows two crystal zones 16, which are arranged on the surface 18 of the enamel layer 10.
- the enamel layer 10 comprises further crystal zones, not shown, which are arranged below the surface 18.
- the crystal zones 16 each form a “hill”, which creates a rough superstructure on the surface 18, and small formations 20, which form a fine structure at the points at which the crystal zones 16 protrude from the surface 18 as “hills”.
- the crystal zones 16 thus form a fine structure and a rough superstructure on the surface 18 of the enamel layer 10, the fine structure being configured only in the area of the crystal zones 16.
- the valleys between the crystal zones 16 are essentially free of the fine structure
- the valleys between the elevations are largely flat and in any case less concave than the elevations are convex.
- the crystal zones 16 are formed from a crystalline phase with crystals which have a long-range order at the atomic level.
- the crystal zones 16 are embedded in the glass flow 14 within the enamel layer 10, a transition being pronounced between the areas of the glass flow 14 and the crystal zones 16, which is shown schematically in FIG. 1 in the form of a transition area 24.
- the transition region 24 In the vicinity of the crystal zones 16, the transition region 24 has a rather crystalline phase and in the vicinity of the glass flow 14 a rather amorphous phase Phase on. Viewed macroscopically, there is thus a continuous transition between the crystalline phase of the crystal zones 16 and the amorphous phase of the glass flow 14.
- the average profile height of the elevations of the crystal zones 16 above the valleys is 25 ⁇ m.
- the average profile height of the formations 20 relative to the small valleys lying between the formations 20 is 2 ⁇ m.
- the ratio of the average profile height to the average distance between adjacent profile tips of the elevations is 0.2.
- Concerning. the fine structure is the ratio of the average profile height to the average distance between adjacent profile tips of the formations 20 0.7.
- FIG. 2 shows a section of a crystal zone 26 with formations 30 forming a fine structure.
- the surface 28 of the crystal zones 26 is coated with an anti-adhesion agent designed as a hydrophobizing agent 32.
- the hydrophobizing agent 32 is a sol gel, namely a siloxane.
- Hydrophobing agent 32 is applied thicker in the valleys 34 between the formations 30 of the fine structure than at the tips of the fine structure.
- the average thickness 36 of the hydrophobizing agent 32 in the valleys is 1 ⁇ m
- the average thickness 38 of the hydrophobizing agent 30 at the tips of the formations 28 is 50 nm. Since the average profile height of the formations 30 is 2 ⁇ m, approximately half the depth of the valleys 34 is filled by the hydrophobicizing agent 32.
- the average profile height of the fine structure including the hydrophobizing agent 32 is thus reduced to half, ie 1 ⁇ m, by the hydrophobizing agent 32.
- a section of an enamel layer 42 at a point of transition between a glass flow 44 and a crystal zone 46 is shown in FIG. 3. Formations 50 forming a fine structure are pronounced on the surface 48 of the enamel layer 42 both in the region of the crystal zone 46 and in the region of the schematically illustrated transition region 52, in which a partially crystalline phase is present.
- the surface 48 of the enamel layer 42 is coated with a hydrophobizing agent 54, which is arranged both in the region of the crystal zone 46 and in the region of the glass flow 44.
- the hydrophobizing agent 54 which has a thickness of between 50 in the area of the valleys 56 about 0.3 ⁇ m, is applied in the area of the surface 48 of the glass flow 44, that is, in the valleys between the crystal zones 46, about 2 ⁇ m thick. As a result, these valleys are protected particularly effectively against the adherence of food residues.
- FIG. 4 A further embodiment of an enamel layer 60 with a matrix of glass flow 62, in which first crystal zones 64 are embedded, is shown in FIG. 4.
- Smaller second crystal zones 68 which form a fine structure on the surface 66 of the valleys, are also formed between the first crystal zones 64 forming the superstructure.
- the fine structure on the surface 66 of the enamel layer 60 is thus formed together by the formations 72 on the crystal zones 64 and the crystal zones 68, while the crystal zones 64 form the rough superstructure.
- the second crystal zones 68 form a coarser fine structure than the formations 72 on the first crystal zones 64.
- the second crystal zones 68 consist essentially of a cerium oxide or cerium silicate, whereas the first crystal zones 64 are essentially formed of TiO 2 .
- the size of the crystal zones 64, 68 is determined by the material composition of the enamel frit and the melting and cooling temperature of the enamel frit or the enamel layer 60.
- the temperatures can be freely selected within the limits specified by the materials and selected so that the desired crystal size, shape and density within the glass flow 62 is achieved.
- transition zones 70 are again pronounced.
- Further crystal zones 64, 68 are formed within the enamel layer 60 below the surface 66, which are not shown in the figure for the sake of clarity.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Surface Treatment Of Glass (AREA)
- Cookers (AREA)
- Electric Ovens (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04711614.0A EP1597521B1 (de) | 2003-02-17 | 2004-02-17 | Vorrichtung mit einer mikrorauen beschichtung |
| US10/546,054 US20060182929A1 (en) | 2003-02-17 | 2004-02-17 | Device comprising a micro-rough coating |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10306582.2 | 2003-02-17 | ||
| DE10306582A DE10306582A1 (de) | 2003-02-17 | 2003-02-17 | Vorrichtung mit einer mikrorauen Beschichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004072556A1 true WO2004072556A1 (de) | 2004-08-26 |
Family
ID=32747940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2004/001493 Ceased WO2004072556A1 (de) | 2003-02-17 | 2004-02-17 | Vorrichtung mit einer mikrorauen beschichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060182929A1 (de) |
| EP (1) | EP1597521B1 (de) |
| DE (1) | DE10306582A1 (de) |
| TR (1) | TR201906154T4 (de) |
| WO (1) | WO2004072556A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8596205B2 (en) | 2008-06-27 | 2013-12-03 | Ssw Holding Company, Inc. | Spill containing refrigerator shelf assembly |
| US9074778B2 (en) | 2009-11-04 | 2015-07-07 | Ssw Holding Company, Inc. | Cooking appliance surfaces having spill containment pattern |
| US10317129B2 (en) | 2011-10-28 | 2019-06-11 | Schott Ag | Refrigerator shelf with overflow protection system including hydrophobic layer |
| US11786036B2 (en) | 2008-06-27 | 2023-10-17 | Ssw Advanced Technologies, Llc | Spill containing refrigerator shelf assembly |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005037338A1 (de) * | 2005-08-04 | 2007-02-08 | Starnberger Beschichtungen Gmbh | Antihaftbeschichtung, Verfahren zu dessen Herstellung und antihaftbeschichtete Substratmaterialien |
| KR101295565B1 (ko) * | 2006-10-10 | 2013-08-09 | 엘지전자 주식회사 | 조리기기 및 그 제작방법 |
| FR3071909B1 (fr) * | 2017-09-29 | 2019-10-18 | Eurokera S.N.C. | Plaque vitroceramique comprenant un cordon de retention des liquides. |
| WO2020102343A1 (en) * | 2018-11-13 | 2020-05-22 | Uberdesign.Com Inc. | Modular grill and smoker, support structures with protective coating and user device integration |
| WO2020207367A1 (en) * | 2019-04-09 | 2020-10-15 | Electrolux Appliances Aktiebolag | Cavity having a non-stick and/or non-wetting coating, cooking appliance comprising such a cavity and method for manufacturing a cavity |
| BR112022009063A2 (pt) * | 2019-11-15 | 2022-10-11 | Electrolux Appliances AB | Componente, em particular uma placa de topo e/ou uma tampa de queimador de um fogão a gás que tem um revestimento antiaderente e/ou antiumidade, fogão a gás que compreende tal componente e método para fabricação de um componente |
| EP4462047A4 (de) * | 2022-07-08 | 2025-09-10 | Samsung Electronics Co Ltd | Aussenmaterial für haushaltsgerät und kühlschrank damit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3761293A (en) * | 1971-04-27 | 1973-09-25 | Hommel Co O | Ceramic coating compositions for continuous cleaning surfaces |
| US5898180A (en) * | 1997-05-23 | 1999-04-27 | General Electric Company | Infrared energy reflecting composition and method of manufacture |
| DE19933550A1 (de) * | 1999-07-16 | 2001-01-25 | Rational Ag | Gargerät mit selbstreinigendem Garraum |
| DE10016485A1 (de) * | 2000-04-01 | 2001-10-11 | Dmc2 Degussa Metals Catalysts | Glas-, Keramik- und Metall-Substrate mit selbstreinigender Oberfläche, Verfahren zu deren Herstellung und deren Verwendung |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000023750A2 (de) * | 1998-10-22 | 2000-04-27 | Rational Ag | Gargerät mit katalysator |
| DE10063739B4 (de) * | 2000-12-21 | 2009-04-02 | Ferro Gmbh | Substrate mit selbstreinigender Oberfläche, Verfahren zu deren Herstellung und deren Verwendung |
| US20040018932A1 (en) * | 2002-06-28 | 2004-01-29 | Boris Yuriditsky | Composition for producing a porcelain enamel having a metallic appearance |
-
2003
- 2003-02-17 DE DE10306582A patent/DE10306582A1/de not_active Withdrawn
-
2004
- 2004-02-17 US US10/546,054 patent/US20060182929A1/en not_active Abandoned
- 2004-02-17 TR TR2019/06154T patent/TR201906154T4/tr unknown
- 2004-02-17 WO PCT/EP2004/001493 patent/WO2004072556A1/de not_active Ceased
- 2004-02-17 EP EP04711614.0A patent/EP1597521B1/de not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3761293A (en) * | 1971-04-27 | 1973-09-25 | Hommel Co O | Ceramic coating compositions for continuous cleaning surfaces |
| US5898180A (en) * | 1997-05-23 | 1999-04-27 | General Electric Company | Infrared energy reflecting composition and method of manufacture |
| DE19933550A1 (de) * | 1999-07-16 | 2001-01-25 | Rational Ag | Gargerät mit selbstreinigendem Garraum |
| DE10016485A1 (de) * | 2000-04-01 | 2001-10-11 | Dmc2 Degussa Metals Catalysts | Glas-, Keramik- und Metall-Substrate mit selbstreinigender Oberfläche, Verfahren zu deren Herstellung und deren Verwendung |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8596205B2 (en) | 2008-06-27 | 2013-12-03 | Ssw Holding Company, Inc. | Spill containing refrigerator shelf assembly |
| US9179773B2 (en) | 2008-06-27 | 2015-11-10 | Ssw Holding Company, Inc. | Spill containing refrigerator shelf assembly |
| US9207012B2 (en) | 2008-06-27 | 2015-12-08 | Ssw Holding Company, Inc. | Spill containing refrigerator shelf assembly |
| US9532649B2 (en) | 2008-06-27 | 2017-01-03 | Ssw Holding Company, Inc. | Spill containing refrigerator shelf assembly |
| US10130176B2 (en) | 2008-06-27 | 2018-11-20 | Ssw Holding Company, Llc | Spill containing refrigerator shelf assembly |
| US10827837B2 (en) | 2008-06-27 | 2020-11-10 | Ssw Holding Company, Llc | Spill containing refrigerator shelf assembly |
| US11191358B2 (en) | 2008-06-27 | 2021-12-07 | Ssw Advanced Technologies, Llc | Spill containing refrigerator shelf assembly |
| US11786036B2 (en) | 2008-06-27 | 2023-10-17 | Ssw Advanced Technologies, Llc | Spill containing refrigerator shelf assembly |
| US12096854B2 (en) | 2008-06-27 | 2024-09-24 | Ssw Advanced Technologies, Llc | Spill containing refrigerator shelf assembly |
| US9074778B2 (en) | 2009-11-04 | 2015-07-07 | Ssw Holding Company, Inc. | Cooking appliance surfaces having spill containment pattern |
| EP2496886B1 (de) * | 2009-11-04 | 2016-12-21 | SSW Holding Company, Inc. | Oberflächen eines kochgeräts mit überlaufbegrenzungsstruktur und herstellungsverfahren dafür |
| US10317129B2 (en) | 2011-10-28 | 2019-06-11 | Schott Ag | Refrigerator shelf with overflow protection system including hydrophobic layer |
Also Published As
| Publication number | Publication date |
|---|---|
| TR201906154T4 (tr) | 2019-05-21 |
| EP1597521B1 (de) | 2019-04-10 |
| DE10306582A1 (de) | 2004-08-26 |
| EP1597521A1 (de) | 2005-11-23 |
| US20060182929A1 (en) | 2006-08-17 |
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