# US 10,455,645 B2 · Heated glass panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,645 B2 - Document ID: US10455645B2 - Status: Granted - Kind: B2 - Application number: 15/317,824 - Filed: 2015-05-28 - Published: 2017-05-11 - Granted: 2019-10-22 - Earliest claimed: 2014-06-12 - Applicants: AGC Glass Europe - Inventors: Peter Masschelein; Zoltan Kazik - Web page: https://patentgrep.com/patent/US10455645B2 ## CPC - H05B 3/84: Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10229: {Metallic layers sandwiched by dielectric layers} - B32B 17/10348: {comprising an obscuration band} - H05B 3/06: Heater elements structurally combined with coupling elements or holders - H05B 2203/011: Heaters using laterally extending conductive material as connecting means - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract The invention relates to a laminated motor vehicle glass panel which consists of two glass sheets joined by means of an intermediate sheet, the glass panel comprising a system of heated layers which is applied to one of the sheets and, to the edge of the same sheet, a substantially opaque masking strip, in contact with the glass sheet, the system of heated conductive layers at least partially covering the masking strip. The glass panel further comprises power supply busbars in contact with the system of layers in the portion covering the masking strip, characterized in that the masking strip has a roughness no greater than 0.5μ and preferably no greater than 0.1μ. ## Claims ### Claim 1 A laminated motor vehicle glass panel, comprising: two glass sheets united by an interlayer sheet; a system of heated layers applied on one face of one of the sheets; a substantially opaque masking strip on an edge of the one face having the system of heated layers, the masking strip in contact with the glass sheet face having the system of heated layers; and electrical supply busbars in contact with the system of layers in a part covering the masking strip; wherein the system of heated conductive layers covers, at least in part, the masking strip, wherein the masking strip exhibits a roughness which is not greater than 0.5μ, and wherein the masking strip is formed of an enamel including pigments, the pigments being in the form of particles, a mean particle size of which is not greater than 5μ. ### Claim 2 (depends on 1) The glass panel according to claim 1, wherein the system of heated conductive layers is formed by cathode sputtering and comprises an assembly of metal layers and of dielectric layers, the assembly exhibiting a thickness which is not greater than 0.1μ. ### Claim 3 (depends on 2) The glass panel according to claim 2, wherein the metal layers comprise silver and are two or three in number. ### Claim 4 (depends on 1) The glass panel according to claim 1, wherein the masking strip exhibits an opaqueness such that the light transmission of the glass panel through this strip remains less than 0.1%. ### Claim 5 (depends on 1) The glass panel according to claim 1, wherein the masking strip exhibits, transversely, a gradually decreasing thickness on its edge turned toward a center of the glass sheet. ### Claim 6 (depends on 1) The glass panel according to claim 1, wherein the masking strip is applied to the glass sheet by an inkjet technique. ### Claim 7 (depends on 6) The glass panel according to claim 6, wherein several applications of the inject technique are carried out in order to form the masking strip, the successive applications being carried out transversely set back on an edge turned toward a center of the glass sheet, set back with respect to a preceding application. ### Claim 8 (depends on 1) The glass panel according to claim 1, wherein the busbars are formed of thin metal bands. ### Claim 9 (depends on 1) The glass panel according to claim 1, wherein the glass sheet on which the system of heated conductive layers is applied is an external sheet of the laminated glass panel, the system being applied on a second face. ### Claim 10 (depends on 1) The glass panel according to claim 1, wherein the busbars are formed of metal bands. ### Claim 11 (depends on 1) The glass panel according to claim 1, wherein the masking strip is an enamel masking strip having a thickness of between 20 μm to 150 μm. ### Claim 12 (depends on 1) The glass panel according to claim 1, wherein the masking strip directly contacts the one face and wherein the system of heating layers also directly contacts the one face in an area of the face where no masking strip is present. ### Claim 13 (depends on 1) The glass panel according to claim 1, wherein, on a side facing a center of the glass sheet, the masking strip exhibits a sloped or terraced surface of decreasing thickness approaching an edge of the side. ### Claim 14 A laminated motor vehicle glass panel, comprising: two glass sheets united by an interlayer sheet; a system of heated layers applied on one face of one of the sheets; a substantially opaque masking strip on an edge of the one face having the system of heated layers, the masking strip in contact with the glass sheet face having the system of heated layers; and electrical supply busbars in contact with the system of layers in a part covering the masking strip; wherein the system of heated conductive layers covers, at least in part, the masking strip, wherein the masking strip exhibits a roughness which is not greater than 0.5μ, and wherein the system of heated conductive layers is formed by cathode sputtering and comprises an assembly of metal layers and of dielectric layers, the assembly exhibiting a thickness which is not greater than 0.1μ. ### Claim 15 (depends on 14) The glass panel according to claim 14, wherein, on a side facing a center of the glass sheet, the masking strip exhibits a sloped or terraced surface of decreasing thickness approaching an edge of the side. ### Claim 16 (depends on 14) The glass panel according to claim 14, wherein the masking strip is applied to the glass sheet by an inkjet technique. ### Claim 17 (depends on 14) The glass panel according to claim 14, wherein the masking strip is an enamel masking strip having a thickness of between 20 μm to 150 μm. ### Claim 18 A laminated motor vehicle glass panel, comprising: two glass sheets united by an interlayer sheet; a system of heated layers applied on one face of one of the sheets; a substantially opaque masking strip on an edge of the one face having the system of heated layers, the masking strip in contact with the glass sheet face having the system of heated layers; and electrical supply busbars in contact with the system of layers in a part covering the masking strip; wherein the system of heated conductive layers covers, at least in part, the masking strip, wherein the masking strip exhibits a roughness which is not greater than 0.5μ, and wherein, on a side facing a center of the glass sheet, the masking strip exhibits a sloped or terraced surface of decreasing thickness approaching an edge of the side. ### Claim 19 (depends on 18) The glass panel according to claim 18, wherein the masking strip is an enamel masking strip having a thickness of between 20 μm to 150 μm. ### Claim 20 (depends on 19) The glass panel according to claim 19, wherein the masking strip is formed of an enamel including pigments, the pigments being in the form of particles, a mean particle size of which is not greater than 5μ. ### Claim 21 (depends on 18) The glass panel according to claim 18, wherein the system of heated conductive layers is formed by cathode sputtering and comprises an assembly of metal layers and of dielectric layers, the assembly exhibiting a thickness which is not greater than 0.1μ.