Patent US4548691A successfully refreshed from Google Patents.
US4548691A
Expired / Lapsed
US
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Thermally insulating glazing
Assignee: Balzers und Leybold Deutschland Holding AG
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Filing: 1984-02-29
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Granted: 1985-10-22
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Expires: 2004-02-29
Abstract
Abstract A method of producing glass sheets having good transmission behavior in the visible spectrum range and having good reflection behavior as regards heat radiation. A transparent substrate S is coated by cathodic atomization with, successively, a first oxide layer 1 comprising indium oxide, tin oxide or mixtures thereof, a layer 2 consisting of silver in a thickness of 5 to 50 n, a metallic layer 3 selected from aluminium, titanium, tantalum, chromium, manganese and zirconium in a thickness ranging from 1 to 5 nm and applied directly to the silver layer 2 for the purpose of maintaining the condition thereof, and a final protective oxide layer 4 of indium oxide, tin oxide or mixtures thereof.
Inventors
- 👤 Anton Dietrich
- 👤 Klaus Hartig
- 👤 Werner Lenz
- 👤 Michael Scherer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:47
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3618; C03C17/3644; C03C17/3652; C03C17/3657; C03C17/366; C03C17/3681; C23; C23C; C23C14/00; C23C14/0021; C23C14/0036; G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/281; G02B5/282
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
109 words
A method of producing glass sheets having good transmission behavior in the visible spectrum range and having good reflection behavior with respect to heat radiation, which comprises coating a transparent substrate, by cathodic atomization, with successive layers comprising (a) a first oxide layer of indium oxide, tin oxide or a mixture thereof, (b) a layer of silver having a thickness of 5 to 15 nm, (c) a metallic intermediate layer, selected from aluminium, titanium, tantalum, chromium, magnesium and zirconium, applied directly to the silver layer in a thickness of between 1 and 5 nm, and (d) a further oxide layer of indium oxide, tin oxide or a mixture thereof.
Claim 2
Independent Claim
109 words
A method of producing glass sheets having good transmission behavior in the visible spectrum range and having good reflection behavior with respect to heat radiation, which comprises coating a transparent substrate, by cathodic atomization, with successive layers comprising (a) a first oxide layer of indium oxide, tin oxide or a mixture thereof, (b) a layer of silver having a thickness of 5 to 15 nm, (c) a metallic intermediate layer, selected from aluminium, titanium, tantalum, chromium, magnesium and zirconium, applied directly to the silver layer in a thickness of between 1 and 5 nm, and (d) a further oxide layer of indium oxide, tin oxide or a mixture thereof.
Claim 3
Dependent Claim
26 words
A method according to claim 1, wherein the oxide layers are applied in a reactive atmosphere and the metallic layers are applied in a neutral atmosphere.
Claim 4
Dependent Claim
23 words
A method according to claim 1, wherein the oxide layers are produced with lead oxide contents of between 2% and 15% by weight.
Claim 5
Dependent Claim
34 words
A method according to claim 3, wherein an alloy containing 80% to 90% indium, 5% to 10% tin and 2% to 15% lead is used as the atomization target for producing the oxide layers.
Claim 6
Dependent Claim
30 words
A method according to claim 3, wherein an alloy containing 85% to 98% tin and 2% to 15% lead is used as the atomization target for producing the oxide layers.
Claim 7
Dependent Claim
21 words
A method according to claim 1, wherein the atomization targets for producing the silver layer contain between 0.001% and 1% nickel.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |