US4101200A
Expired / Lapsed
US
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Coating composition for a light transmitting absorbing coating on substrates
Assignee: Balzers Patent und Beteiligungs AG
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Filing: 1976-03-08
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Granted: 1978-07-18
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Expires: 1996-03-08
Abstract
Abstract A light transmitting, absorbing coating is produced on a substrate by depositing layers of silicon in an oxidizing residual gas atmosphere and chrome in a non-oxidizing residual gas atmosphere in alternate layers cathode sputtering. 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
2026-10-26 02:27
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3613; C03C17/3639; C03C17/3649; C03C17/3657; C03C17/3681; C03C17/40; C23; C23C; C23C14/00; C23C14/0021; C23C14/0036; C23C14/0073; C23C14/06; C23C14/10; C23C14/14; C23C14/18; C23C28/00; C23C28/30; C23C28/32; C23C28/322; C23C28/34; C23C28/345; C23C28/40; C23C28/42; F; F24; F24S; F24S70/00; F24S70/20; G; G02; G02B; G02B1/00; G02B1/10; G02C; G02C7/00; G02C7/10; G02C7/108; G02C2202/00; G02C2202/16; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A light transmitting filter having a blue-gray transmission color, in particular a sight glass, comprising a substrate of a transparent material and a coating on said substrate of alternate metal and non-metal layers, said metal layers consisting essentially of chromium and having a thickness of less than 10 nm, and said non-metal layers consisting essentially of silicon dioxide.
Claim 2
Dependent Claim
58 words
A light transmitting filter having a blue-gray transmission color, in particular a sight glass, comprising a substrate of a transparent material and a coating on said substrate of alternate metal and non-metal layers, said metal layers consisting essentially of chromium and having a thickness of less than 10 nm, and said non-metal layers consisting essentially of silicon dioxide.
Claim 3
Dependent Claim
19 words
A light transmitting, absorbing coating, according to claim 1, wherein said silicon dioxide layers are at least 30 nm.
Claim 4
Dependent Claim
19 words
A light transmitting, absorbing coating, according to claim 1, wherein the coating comprises at least five individual chrome layers.
Claim 5
Dependent Claim
22 words
A light transmitting, absorbing coating, according to claim 1, wherein there are 18 layers and the coating has a bluish-grey transmission color.
Claim 6
Dependent Claim
22 words
A light transmitting, absorbing coating, according to claim 4, including a further layer of copper to form a green light transmission color.
Claim 7
Dependent Claim
23 words
A light transmitting, absorbing coating, according to claim 1, including a further coating of nickel wherein the coating provides a bluish-grey transmission color.
Claim 8
Dependent Claim
17 words
A light-transmitting filter, according to claim 1, wherein a non-metal silicone dioxide is adjacent to said substrate.
Claim 9
Dependent Claim
15 words
A light-transmitting filter, according to claim 1, wherein said substrate comprises a transparent plastic material.
Claim 10
Dependent Claim
14 words
A light-transmitting filter, according to claim 1, wherein said substrate comprises a vitreous material.
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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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |