US4010304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated windows having vacuum-deposited layers
Assignee: Saint Gobain Industries SA
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Filing: 1975-07-24
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Granted: 1977-03-01
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Expires: 1995-07-24
Abstract
Abstract A glass sheet is provided with a metallic layer and auxiliary dielectric layers, at least one of the auxiliary layers being formed of a deposit of a heavy metal tungsten or molybdenum trioxide. The metallic trioxide may form an anchoring layer, and is advantageously of an interference thickness. Particular procedures for forming electric terminals for supplying heating current to the metallic layer are described. Laminated glazings with an intercalary plastic layer over the metallic trioxide layer are described.
Inventors
- 👤 Sabatino Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:08
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B9/00; B32B9/005; B32B17/10165; B32B17/10174; B32B17/1055; B32B17/10761; B32B9/04; B32B9/041; C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3613; C03C17/3628; C03C17/3644; C03C17/3649; C03C17/3655; C03C17/3668; C03C17/3673; H; H05; H05B; H05B3/00; H05B3/84; H05B3/86; B32B2307/00; B32B2307/20; B32B2307/204; B32B2307/40; B32B2307/412; B32B2311/00; B32B2311/02; B32B2311/04; B32B2315/00; B32B2315/02; B32B2605/00; B32B2605/006; H05B2203/00; H05B2203/013; H05B2203/016; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
55 words
A glazing comprising a glass sheet coated with an auxiliary dielectric anchoring layer, a metallic layer in contact with the anchoring layer, and a second auxiliary dielectric layer in contact with the metallic layer, in which at least one of the dielectric layers is formed of a deposit of a trioxide of tungsten or molybdenum.
Claim 2
Dependent Claim
55 words
A glazing comprising a glass sheet coated with an auxiliary dielectric anchoring layer, a metallic layer in contact with the anchoring layer, and a second auxiliary dielectric layer in contact with the metallic layer, in which at least one of the dielectric layers is formed of a deposit of a trioxide of tungsten or molybdenum.
Claim 3
Dependent Claim
31 words
A glazing according to claim 1 in which the auxiliary anchoring layer is formed of a deposit of a trioxide of tungsten or molybdenum, trioxide and is of an interference thickness.
Claim 4
Dependent Claim
41 words
A glazing according to claim 2 in which the anchoring layer has a thickness that reduces the transmission through the glazing in the middle of the visible spectrum to values in the range of 77% to 87% of the initial transmission.
Claim 5
Dependent Claim
62 words
A glazing according to claim 1 in which said second auxiliary layer is formed of a trioxide of tungsten or molybdenum, said glazing including an intercalary plastic layer over said second auxiliary layer, the thickness of said second auxiliary layer being slightly greater than a thickness producing a maximal improvement in the transmission of light before placing said intercalary plastic layer thereover.
Claim 6
Dependent Claim
39 words
A glazing according to claim 4 in which the improvement in light transmission produced by said second auxiliary layer near the lower limit of the visible spectrum is less than said maximal improvement by an amount not exceeding 16%.
Claim 7
Dependent Claim
47 words
A glazing according to claim 1 including electrical contact areas for supplying heating power to said metallic layer, at least one of said auxiliary dielectric layers being interposed between said electrical contact areas and said metallic layer and being formed of a trioxide of tungsten or molybdenum.
Claim 8
Dependent Claim
23 words
A glazing according to claim 6 in which said metallic layer has a thickness reducing light transmission therethrough by approximately 12% to 20%.
Claim 9
Dependent Claim
42 words
A glazing according to claim 6 in which said electrical contact areas comprise a layer of a baked metallic frit on said glass sheet, and said auxiliary dielectric anchoring layer is a trioxide of tungsten or molybdenum, and is of interference thickness.
Claim 10
Dependent Claim
14 words
A glazing according to claim 6 in which said metallic layer is of silver.
Claim 11
Dependent Claim
19 words
A glazing according to claim 6 in which said metallic layer is essentially constituted of a deposit of gold.
Claim 12
Dependent Claim
34 words
A glazing according to claim 10 in which both of said auxiliary dielectric layers on opposite sides of the gold layer are of a trioxide of tungsten or molybdenum, and are of interference thickness.
Claim 13
Dependent Claim
35 words
A glazing according to claim 1 including an intercalary plastic layer over said second auxiliary layer, and having a light transmission greater than 75% and an electrical surface resistivity less than 15 ohms per square.
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) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |