# US 11,999,136 B2 · Laminated glass > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,999,136 B2 - Document ID: US11999136B2 - Status: Granted - Kind: B2 - Application number: 16/983,037 - Filed: 2020-08-03 - Published: 2020-11-19 - Granted: 2024-06-04 - Earliest claimed: 2018-04-05 - Assignees: AGC Inc. - Applicants: AGC Inc. - Inventors: Tokihiko Aoki - Web page: https://patentgrep.com/patent/US11999136B2 ## CPC - B32B 17/10605: {Type of plasticiser} - B32B 17/10: of synthetic resin - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10119: {having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate} - B32B 17/10614: {comprising particles for purposes other than dyeing} - B32B 17/10743: {containing acrylate (co)polymers or salts thereof} - B60R 11/02: for radio sets, television sets, telephones, or the like; Arrangement of controls thereof - C03C 3/087: containing calcium oxide, e.g. common sheet or container glass - C03C 3/095: containing rare earths - C03C 27/048: {consisting of an adhesive specially adapted for that purpose} - H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils - B32B 2264/102: Oxide or hydroxide - B32B 2605/006: Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings - B60K 35/60: Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) - B60K 2360/785: on or in relation to the windshield or windows - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - 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 - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES ## Abstract To provide laminated glass for a vehicle, which is excellent in heat-shielding properties and which is capable of maintaining visible light transmittance to be high even when used for a long period of time. Laminated glass for a vehicle, which is laminated glass comprising a pair of glass plates and an intermediate film sandwiched between the pair of glass plates, wherein in a laminated glass specimen of 1 cm2 cut out from the laminated glass in the thickness direction, the content of CeO2 is at most 0.4 mg, and the content of total iron converted to Fe2O3 is at least 6.0 mg and at most 10.0 mg; and the intermediate film is made of a resin film containing tin-doped indium oxide fine particles having an average particle diameter of at most 0.1 μm. ## Claims ### Claim 1 Laminated glass for a vehicle, which is laminated glass comprising a pair of glass plates and an intermediate film sandwiched between the pair of glass plates, characterized in that in a laminated glass specimen of 1 cm2 cut out from the laminated glass in the thickness direction, the content of CeO2 is at most 0.4 mg, and the content of total iron converted to Fe2O3 is at least 6.0 mg and at most 10.0 mg; and the intermediate film is made of a resin film containing tin-doped indium oxide fine particles having an average particle diameter of at most 0.1 μm. ### Claim 2 (depends on 1) The laminated glass according to claim 1, wherein of the pair of glass plates when positioned in a vehicle, one glass plate of the pair of glass plates that is positioned on an exterior of the vehicle as a side glass plate has a transmittance of light having a wavelength of 380 nm being at least 55% and at most 70% when spectroscopic measurement is conducted in accordance with JIS R3106 (1998). ### Claim 3 (depends on 1) The laminated glass according to claim 1, wherein of the pair of glass plates when positioned in a vehicle, one glass plate of the pair of glass plates that is positioned on an interior of the vehicle as a side glass plate has a transmittance of light having a wavelength of 380 nm being at least 50% when spectroscopic measurement is conducted in accordance with JIS R3106 (1998). ### Claim 4 (depends on 1) The laminated glass according to claim 1, wherein the content of the tin-doped indium oxide fine particles to the total amount of the intermediate film is at least 0.1% by mass and at most 0.5% by mass. ### Claim 5 (depends on 1) The laminated glass according to claim 1, wherein in each of the pair of glass plates, the proportion of the content of divalent iron converted to Fe2O3 to the total iron converted to Fe2O3 is at least 20% and at most 30%. ### Claim 6 (depends on 1) The laminated glass according to claim 1, wherein the laminated glass has a visible light transmittance Tva according to JIS R3212 (1998) being at least 70% and at most 77%, a total solar radiation transmittance Tts according to ISO 13837 being at least 53% and at most 59%, and a transmittance of light having a wavelength of 850 nm being at least 15% and at most 45% when spectroscopic measurement is conducted in accordance with JIS R3106 (1998). ### Claim 7 (depends on 1) The laminated glass according to claim 1, wherein the difference between the thickness of the upper side and the thickness of the lower side of the laminated glass is at least 0.2 mm and at most 1 mm. ### Claim 8 (depends on 1) The laminated glass according to claim 1, wherein the total of the thicknesses of the pair of glass plates is at least 3.5 mm and at most 4.8 mm. ### Claim 9 (depends on 1) The laminated glass according to claim 1, wherein in the pair of glass plates, the content (mass %) of total iron converted to Fe2O3 in the vehicle exterior side glass plate is larger than the content (mass %) of total iron converted to Fe2O3 in the vehicle interior side glass plate. ### Claim 10 (depends on 1) The laminated glass according to claim 1, wherein in the pair of glass plates, the content (mass %) of total iron converted to Fe2O3 in the vehicle exterior side glass plate is smaller than the content (mass %) of total iron converted to Fe2O3 in the vehicle interior side glass plate. ### Claim 11 (depends on 1) The laminated glass according to claim 1, wherein in the pair of glass plates, the content (mass %) of total iron converted to Fe2O3 in the vehicle exterior side glass plate is equal to the content (mass %) of total iron converted to Fe2O3 in the vehicle interior side glass plate. ### Claim 12 (depends on 1) The laminated glass according to claim 1, wherein either one of the pair of glass plates is soda lime glass. ### Claim 13 (depends on 1) The laminated glass according to claim 1, wherein the pair of glass plates when positioned in a vehicle, one glass plate of the pair of glass plates that is positioned an interior side of the vehicle has on at least one surface has a concealing layer made of dark-colored ceramic such that a portion of the at least one surface does not include the concealing layer in an amount of at least 8,000 cm2. ### Claim 14 (depends on 1) The laminated glass according to claim 1, wherein the laminated glass is provided with an information acquisition device that when positioned in a vehicle, the information acquisition device is positioned on an interior side. ### Claim 15 (depends on 14) The laminated glass according to claim 14, wherein the information acquisition device is an imaging device. ### Claim 16 (depends on 1) The laminated glass according to claim 1, wherein the content of total iron converted to Fe2O3 is at least 7.1 mg and at most 9.5 mg. ### Claim 17 (depends on 12) The laminated glass according to claim 12, wherein the soda lime glass has a content of total iron converted to Fe2O3 being 0.60 mass % or more and 1.00 mass % or less. ### Claim 18 (depends on 12) The laminated glass according to claim 12, wherein the soda lime glass has a content of total iron converted to Fe2O3 being 0.65 mass % or more and 0.95 mass % or less. ### Claim 19 (depends on 1) The laminated glass according to claim 1, wherein the laminated glass has a transmittance of light having a wavelength of 850 nm being at least 15% and at most 30% when spectroscopic measurement is conducted in accordance with JIS R3106 (1998). ### Claim 20 (depends on 1) The laminated glass according to claim 1, wherein the laminated glass has a transmittance of light having a wavelength of 850 nm being at least 20% and at most 30% when spectroscopic measurement is conducted in accordance with JIS R3106 (1998).