US4080269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing coatings having a high absorption in the range of the solar spectrum
Assignee: US Philips Corp
•
Filing: 1976-12-13
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Granted: 1978-03-21
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Expires: 1996-12-13
Abstract
Abstract Method of producing a black coating highly absorbant in the solar spectrum range by electrodeposition from an aqueous solution containing a soluble cobalt compound and a large amount of alkali thiocyanate.
Inventors
- 👤 Heinz Scholz
- 👤 Hans Jungk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:08
CPC Classifications
C; C25; C25D; C25D9/00; C25D9/04; F; F24; F24S; F24S70/00; F24S70/20; F24S70/225; F24S70/25; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y10; Y10S; Y10S126/00; Y10S126/907; Y10S126/908; Y10S205/00; Y10S205/923
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
88 words
A method of producing a black coating having a high degree of absorption in the solar region and a low degree of heat radiation on a metal layer highly reflective of infrared radiation, said method comprising electrodepositing said black coating on said metal layer from an aqueous solution containing an electrolyte consisting essentially of a soluble cobalt compound and an alkali thiocyanate in the ratio by weight of the alkali thiocyanate as K CNS to the cobalt compound as CoCl 2 6H 2 O of 20.1 to 1:2.
Claim 2
Independent Claim
88 words
A method of producing a black coating having a high degree of absorption in the solar region and a low degree of heat radiation on a metal layer highly reflective of infrared radiation, said method comprising electrodepositing said black coating on said metal layer from an aqueous solution containing an electrolyte consisting essentially of a soluble cobalt compound and an alkali thiocyanate in the ratio by weight of the alkali thiocyanate as K CNS to the cobalt compound as CoCl 2 6H 2 O of 20.1 to 1:2.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein the electrolyte in addition contains at least one compound selected from the group consisting of soluble nickel and soluble iron compounds.
Claim 4
Dependent Claim
13 words
The method of claim 2 wherein the metal layer is a silver layer.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the metal layer is a silver layer.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein from 15 to 50% by weight of the electrolyte consists of the alkali thiocyanate.
Claim 7
Dependent Claim
48 words
An article comprising an electrically non-conductive substrate having deposited thereon at least one intermediate infra-red reflecting metal layer coated with a black coating highly absorptive in the solar region and having a low degree of heat radiation, said black coating being formed by the method of claim 1.
References Cited (Backward Citations)
US2834725A
Cited
US2844530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |