Patent US3769084A successfully refreshed from Google Patents.
US3769084A
Expired / Lapsed
US
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Method for forming carbon coating and composite article with a carbonaceous coating thereon
Assignee: Hitachi Ltd
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Filing: 1969-12-23
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Granted: 1973-10-30
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Expires: 1989-12-23
Abstract
Abstract A carbon coated layer having good property for controlling the secondary electron emission and electron reflecting effect is deposited on a metal article surface having an amorphous nickel layer plated thereon by heating at a temperature of from 500 to 680*C in an atmosphere containing at least one hydrocarbon gas selected from the group consisting of acetylene, ethylene, ethane and propane having a partial pressure of 5 to 50 Torr.
Inventors
- 👤 T Saito
- 👤 T Gejyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:43
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/14; H01J9/142; H01J9/146; C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12625; Y10T428/12771; Y10T428/12861; Y10T428/12944; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
19 words
A method according to claim 1, wherein said amorphous nickel layer has a thickness of about 2 Mu .
Claim 2
Dependent Claim
14 words
A method according to claim 1, wherein said amorphous nickel layer is electrolytically formed.
Claim 3
Dependent Claim
14 words
A method according to claim 1, wherein said amorphous nickel layer is nonelectrolytically formed.
Claim 4
Dependent Claim
24 words
A method according to claim 1, wherein said hydrocarbon is at least one member selected from the group consisting of acetylene, ethylene and ethane.
Claim 5
Dependent Claim
51 words
A method according to claim 1, wherein said atmosphere comprising hydrocarbon comprises at least one member selected from the group consisting of acetylene, ethylene, ethane and propane having a partial pressure of 5 to 50 Torr. and a carrier gas selected from the group consisting of an inert gas and hydrogen.
Claim 6
Dependent Claim
66 words
A carbon coated metal article, which comprises a metal substrate, an amorphous nickel plated layer on said substrate and a carbon coating on said amorphous nickel plated layer said carbon coating being formed by heating said amorphous nickel plated metal substrate in an atmosphere containing a hydrocarbon at a partial pressure of 5 to 50 Torr. at a temperature of from 500* C. to 680* C.
Claim 7
Dependent Claim
32 words
A metal coated article according to claim 7, wherein the substrate of said metal article is a member selected from the group consisting of mild steel, nickel, copper, molybdenum and stainless steel.
Claim 8
Dependent Claim
67 words
A shadow mask for color television which comprises a metal substrate, an amorphous nickel plating layer thereon, and a carbon coating on said amorphous nickel plating layer, said carbon coating being coated on said amorphous nickel plating layer by heating a metal substrate having an amorphous nickel plating layer in an atmosphere comprising a hydrocarbon having a partial pressure of 5 to 50 Torr. at 500*-680* C.
Claim 9
Dependent Claim
67 words
An electric discharge tube plate material which comprises a metal substrate, an amorphous nickel plating layer thereon, and a carbon coating on said amorphous nickel plating layer, said carbon coating being coated on said amorphous nickel plating layer by heating a metal substrate having an amorphous nickel plating layer in an atmosphere comprising a hydrocarbon having a partial pressure of 5 to 50 Torr. at 500*-680* C.
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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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |