# US 10,308,548 B2 · Glass or glass ceramic substrate provided with a decorative coating and method for producing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,548 B2 - Document ID: US10308548B2 - Status: Granted - Kind: B2 - Application number: 14/518,456 - Filed: 2014-10-20 - Published: 2015-02-05 - Granted: 2019-06-04 - Earliest claimed: 2012-04-20 - Assignees: Schott AG - Applicants: Schott AG - Inventors: Silke Knoche; Angelina Milanovska; Lutz Klippe; Ulf Hoffmann; Ella Ruhl - Web page: https://patentgrep.com/patent/US10308548B2 ## CPC - C03C 17/42: at least one coating of an organic material and at least one non-metal coating - B05D 1/36: Successively applying liquids or other fluent materials, e.g. without intermediate treatment - B05D 5/06: to obtain multicolour or other optical effects (B05D5/02 takes precedence) - B05D 7/52: {Two layers} - C03C 17/008: {comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28} - C03C 17/32: with synthetic or natural resins (C03C17/30 takes precedence) - C03C 2217/425: consisting of a porous layer - C03C 2217/485: Pigments - C03C 2217/72: Decorative coatings - C03C 2218/36: Underside coating of a glass sheet - F24C 15/02: Doors specially adapted for stoves or ranges - F24C 15/10: Tops, e.g. hot plates; Rings (cover lids or splash guards F24C15/12; spillage trays or grooves F24C15/14) - Y10T 428/24364: with transparent or protective coating - C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Glass or glass ceramic substrates are provided that have a decorative coating. Methods for coating a glass or glass ceramic substrate with a decorative coating are also provided. In the method, a first, textured layer is applied which is filled with a further layer, so that a layer material of graded composition is formed. ## Claims ### Claim 1 A method for applying a decorative coating to a glass or glass ceramic substrate, comprising the steps of: applying a first layer and baking the first layer at a temperature so that cracks arise, the first layer having a textured surface, wherein the first layer is applied as a glass flux and wherein the first layer includes pigment particles; and applying a second layer onto the first layer, wherein the second layer fills the textured surface at least partially, so that material of the first layer merges into material of the second layer. ### Claim 2 (depends on 1) The method as in claim 1, wherein the first layer is baked, whereby the glass flux particles melt while the pigment particles remain intact. ### Claim 3 (depends on 2) The method as in claim 2, wherein the pigment particles are embedded by the glass flux. ### Claim 4 (depends on 1) The method as in claim 1, wherein the material of the second layer comprises pigments or colorants. ### Claim 5 (depends on 4) The method as in claim 4, wherein the material of the first or second layer comprises pigments in a proportion of more than 50% in percent by weight. ### Claim 6 (depends on 1) The method as in claim 1, wherein at least the first layer comprises metal oxide particles as the pigment particles and a further inorganic material. ### Claim 7 (depends on 1) The method as in claim 1, wherein at least the first layer comprises pigment particles having of a mean particle size of more than 0.25 μm. ### Claim 8 (depends on 1) The method as in claim 1, wherein the second layer is an at least partially polymeric layer. ### Claim 9 (depends on 8) The method as in claim 8, wherein the partially polymeric layer is select from the group consisting of a polysiloxane, polysilsesquioxane, polyurethane, epoxy-functionalized silicone resin, polyester-functionalized silicone resin, and a sol-gel. ### Claim 10 (depends on 1) The method as in claim 1, wherein the first layer applied has a maximum texture depth from 0.1 to 5 μm. ### Claim 11 (depends on 10) The method as in claim 10, wherein the maximum texture depth of the first layer is more than 40% of the maximum thickness of the first layer. ### Claim 12 (depends on 1) The method as in claim 1, wherein the first layer applied is a layer having a closed porosity of less than 30 %. ### Claim 13 (depends on 1) The method as in claim 1, wherein the first layer is baked at a temperature of more than 500° C. ### Claim 14 (depends on 1) The method as in claim 1, wherein the pigment particles are added to the material of the first layer. ### Claim 15 (depends on 1) The method as in claim 1, wherein the first and second layers exhibit a lightness L in the Lab color space of more than 29.0 when individually applied, and wherein the first and second layers exhibit a lightness L of less than 28.0. ### Claim 16 (depends on 1) The method as in claim 1, wherein the step of applying the first layer comprises applying the first layer to a further textured layer so that the further textured layer is below the first layer. ### Claim 17 (depends on 1) The method according to claim 1, wherein the first layer includes filler particles. ### Claim 18 A method for applying a decorative coating to a glass or glass ceramic substrate, comprising the steps of: applying a first layer and baking the first layer at a temperature so that cracks arise, the first layer having a textured surface, wherein the first layer is applied as a glass flux and wherein the first layer includes filler particles; and applying a second layer onto the first layer, wherein the second layer fills the textured surface and cracks at least partially so that material of the first layer merges into material of the second layer. ### Claim 19 A method for applying a decorative coating to a glass or glass ceramic substrate, comprising the steps of: applying to the substrate a glass flux including pigment particles and/or filler particles; baking the glass flux including the pigment particles and/or filler particles to form a first layer having a closed porosity of less than 5% and a textured surface; and applying a second layer onto the first layer so that the second layer fills the textured surface and fills any cracks produced in the first layer by the baking so that material of the first layer merges into material of the second layer.