US3373093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an oxide coating on metals
Assignee: ConocoPhillips Co
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Filing: 1966-03-02
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Granted: 1968-03-12
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Expires: 1986-03-02
Abstract
No abstract record available.
Inventors
- 👤 Richard L Every
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:41
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/34; H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8825; H01M4/8846; H01M4/885; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
A METHOD OF PUTTING AN OXIDE COATING ON METALLIC NICKEL COMPRISING: (A) IMMERSING THE METALLIC NICKEL IN A MOLTEN SALT CONSISTING ESSENTIALLY OF ONE SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL NITRATES AND ALKALI METAL CHLORATES; (B) MAKING THE METALLIC NICKEL THE ANODE IN AN ELECTROLYTIC CIRCUIT INCLUDING THE ALKALI METAL SALT; AND (C) PASSING SUFFICIENT CURRENT THROUGH SAID ELECTROLYTIC CIRCUIT TO PROVIDE A CURRENT DENSITY BETWEEN ABOUT 1 TO ABOUT 50 MA./SQ.CM.
Claim 2
Independent Claim
75 words
A METHOD OF PUTTING AN OXIDE COATING ON METALLIC NICKEL COMPRISING: (A) IMMERSING THE METALLIC NICKEL IN A MOLTEN SALT CONSISTING ESSENTIALLY OF ONE SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL NITRATES AND ALKALI METAL CHLORATES; (B) MAKING THE METALLIC NICKEL THE ANODE IN AN ELECTROLYTIC CIRCUIT INCLUDING THE ALKALI METAL SALT; AND (C) PASSING SUFFICIENT CURRENT THROUGH SAID ELECTROLYTIC CIRCUIT TO PROVIDE A CURRENT DENSITY BETWEEN ABOUT 1 TO ABOUT 50 MA./SQ.CM.
Claim 3
Independent Claim
82 words
A METHOD OF PUTTING AN OXIDE COATING ON PLATINUM HAVING THE PREVIOUSLY APPLIED COATING OF PLATINUM BLACK DEPOSITED THEREON COMPRISING: (A) IMMERSING SAID PLATINUM IN A MOLTEN SALT CONSISTING ESSENTIALLY OF ONE SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL NITRATES AND ALKALI METAL CHLORATES; (B) MAKING SAID PLATINUM THE ANODE IN AN ELECTROLYTIC CIRCUIT INCLUDING THE ALKALI METAL SALT; AND (C) PASSING SUFFICIENT CURRENT THROUGH SAID ELECTROLYTIC CIRCUIT TO PROVIDE A CURRENT DENSITY BETWEEN ABOUT 1 TO ABOUT 50 MA/SQ.CM.
Claim 4
Independent Claim
82 words
A METHOD OF PUTTING AN OXIDE COATING ON PLATINUM HAVING THE PREVIOUSLY APPLIED COATING OF PLATINUM BLACK DEPOSITED THEREON COMPRISING: (A) IMMERSING SAID PLATINUM IN A MOLTEN SALT CONSISTING ESSENTIALLY OF ONE SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL NITRATES AND ALKALI METAL CHLORATES; (B) MAKING SAID PLATINUM THE ANODE IN AN ELECTROLYTIC CIRCUIT INCLUDING THE ALKALI METAL SALT; AND (C) PASSING SUFFICIENT CURRENT THROUGH SAID ELECTROLYTIC CIRCUIT TO PROVIDE A CURRENT DENSITY BETWEEN ABOUT 1 TO ABOUT 50 MA/SQ.CM.
References Cited (Backward Citations)
US2822606A
Cited
US3239436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |