US4048039A
Expired / Lapsed
US
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Method of producing a light transmitting absorbing coating on substrates
Assignee: Balzers Patent und Beteiligungs AG
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Filing: 1976-10-21
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Granted: 1977-09-13
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Expires: 1996-10-21
Abstract
Abstract A light transmitting, absorbing coating is produced on a substrate by depositing by cathode sputtering alternate layers of silicon in an oxidizing residual gas atmosphere and chrome in a non-oxidizing residual gas atmosphere. The light transmitting layer comprises a substrate having a coating of a bluish-grey transmission color which comprises a plurality of alternate chrome and silicon dioxide layers with the thickness of the individual chrome layers being smaller than 10 nm.
Inventors
- 👤 Helmut Daxinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:57
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/10; C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3613; C03C17/3639; C03C17/3649; C03C17/3657; C03C17/3681; C23; C23C; C23C14/00; C23C14/0021; C23C14/0036; C23C14/0073; C23C14/06; C23C14/10; C23C14/14; C23C14/18; F; F24; F24S; F24S70/00; F24S70/20; C03C2217/00; C03C2217/70; C03C2217/73; C03C2217/734; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
43 words
A method of producing a light transmitting, absorbing coating on a substrate, comprising depositing by cathode sputtering, alternate layers of silicon and chrome, with the silicon being deposited in an oxidizing residual gas atmosphere and the chrome in a non-oxidizing residual gas atmosphere.
Claim 2
Independent Claim
43 words
A method of producing a light transmitting, absorbing coating on a substrate, comprising depositing by cathode sputtering, alternate layers of silicon and chrome, with the silicon being deposited in an oxidizing residual gas atmosphere and the chrome in a non-oxidizing residual gas atmosphere.
Claim 3
Dependent Claim
15 words
A method according to claim 1, wherein the chrome is sputtered in an argon atmosphere.
Claim 4
Dependent Claim
20 words
A method according to claim 1, wherein nineteen layers are applied with the silicon layer being located adjacent the substrate.
Claim 5
Dependent Claim
26 words
A method according to claim 1, wherein the chrome layers are deposited by sputtering metallic chrome in pure argon at a pressure of 8×10 -4 .
Claim 6
Dependent Claim
55 words
A method according to claim 1, wherein the silicon layers are produced by sputtering silicon in an oxidizing atmosphere comprising an argon-oxygen mixture at a total pressure of 8×10 -4 torr and at an oxygen partial pressure of 2×10 -4 torr, and in which the silicon layer is deposited to a thickness of 40 nm.
Claim 7
Dependent Claim
25 words
A method according to claim 1, including combining the coating thus formed which is of a blue transparency with further layers of brownish-yellow transmission color.
Claim 8
Dependent Claim
18 words
A method according to claim 6, wherein the further layers of brownish-yellow transmission color comprise layers of copper.
Claim 9
Dependent Claim
28 words
A method according to claim 6, wherein the coating formed is of bluish transmission color and includes adding a further layer of a neutral substance, such as nickel.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |