US4368945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared reflecting laminated glass for automobile
Assignee: Honda Motor Co Ltd
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Filing: 1980-08-06
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Granted: 1983-01-18
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Expires: 2000-08-06
Abstract
Abstract An infrared reflecting laminated glass having more than 70% transmission of visible rays comprising a pair of glass sheets with flexible, laminated interlayer films is disclosed wherein the interlayer films comprise a pair of polyvinyl butyral interlayer films which hold an infrared reflecting plastic film. The infrared reflecting plastic film is formed by sequentially coating, on a plastic film, a tungsten oxide layer havig a thickness of 180A to 500A or 1400A to 1600A, a silver layer having a thickness of 80A to 150A, and a tungsten oxide layer having a thickness of 180A to 500A or 1400A to 1600A, wherein at least one of the polyvinyl butyral interlayer films incorporates an ultraviolet absorbent.
Inventors
- 👤 Yoshitugu Fujimori
- 👤 Masataka Kumata
- 👤 Mamoru Mizuhashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:06
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/30; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10174; B32B17/1055; B32B17/10761; B32B27/06; B32B27/08; B32B27/18; B32B27/36; B32B2307/00; B32B2307/40; B32B2307/416; B32B2605/00; B32B2605/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
An infrared reflecting laminated glass having more than 70% transmission of visible rays comprising a pair of glass sheets with flexible laminated interlayer films wherein said laminated interlayer films comprise a pair of polyvinyl butyral interlayer films which hold an infrared reflecting plastic film, said infrared reflecting plastic film formed by sequentially coating, on a plastic film, a tungsten oxide layer having a thickness of 180 A to 500 A or 1400 A to 1600 A, a silver layer having a thickness of 80 A to 150 A and a tungsten oxide layer having a thickness of 180 A to 500 A or 1400 A to 1600 A wherein at least one of said polyvinyl butyral interlayer films incorporate an ultraviolet absorbent.
Claim 2
Dependent Claim
122 words
An infrared reflecting laminated glass having more than 70% transmission of visible rays comprising a pair of glass sheets with flexible laminated interlayer films wherein said laminated interlayer films comprise a pair of polyvinyl butyral interlayer films which hold an infrared reflecting plastic film, said infrared reflecting plastic film formed by sequentially coating, on a plastic film, a tungsten oxide layer having a thickness of 180 A to 500 A or 1400 A to 1600 A, a silver layer having a thickness of 80 A to 150 A and a tungsten oxide layer having a thickness of 180 A to 500 A or 1400 A to 1600 A wherein at least one of said polyvinyl butyral interlayer films incorporate an ultraviolet absorbent.
Claim 3
Dependent Claim
23 words
The infrared reflecting laminated glass according to claim 1 wherein said infrared reflecting laminated glass has less than 12% reflectivity of visible rays.
Claim 4
Dependent Claim
23 words
The infrared reflecting laminated glass according to claim 1 wherein said infrared reflecting laminated glass has less than 65% transmission of solar rays.
Claim 5
Dependent Claim
31 words
The infrared reflecting laminated glass according to claim 1 wherein said infrared reflecting laminated glass has less than 12% of visible ray reflectivity and less than 65% of solar ray transmission.
Claim 6
Dependent Claim
30 words
The infrared reflecting laminated glass according to claim 1 wherein said polyvinyl butyral interlayer films absorb more than 90% of the ultraviolet rays having wavelengths of less than 3900 A.
Claim 7
Dependent Claim
36 words
The infrared reflecting laminated glass according to claim 1 wherein at least one of said polyvinyl butyral interlayer films incorporates said ultraviolet absorbent at a weight mixture ratio of 0.5 to 3% of said film weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |