US3451856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrafluoroethylene-coated catalytic nonporous metallic fuel cell anode and process of making same
Assignee: Union Oil Company of California
•
Filing: 1965-01-28
•
Granted: 1969-06-24
•
Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Edward O Fraase
- 👤 Glenn A Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:03
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8803; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
IN THE METHOD OF PREPARING A FUEL CELL ELECTRODE WHEREIN AN ELECTROCHEMICAL CATALYST IS ELECTROLYTICALLY DEPOSITED ON THE SURFACE OF A NONPOROUS, IMPERMEABLE, METAL SUBSTRATE, THE IMPROVEMENT IN COMBINATION THEREWITH WHICH CONSISTS ESSENTIALLY OF COATING THE THUS FORMED CATALYST-SUBSTRATE COMBINATION WITH A THIN FILM OF TETRAFLUORO-ETHYLENE RESIN, THE THICKNESS OF SAID FILM BEING SUFFICIENTLY SMALL SO AS NOT TO AFFECT THE CATALYTIC PROPERTIES OF SAID ELECTROCHEMICAL CATALYST DEPOSEITED ON SAID SUBSTRATE AND SAID FILM CONTAINING ABOUT 10**-5 TO 10**-3 GM. OF RESIN PER CM.2 OF THE ELECTRODE, WHEREBY THE ADHESION OF SAID ELECTROCHEMICAL CATALYST TO SAID SUBSTRATE IS IMPROVED.
Claim 2
Dependent Claim
99 words
IN THE METHOD OF PREPARING A FUEL CELL ELECTRODE WHEREIN AN ELECTROCHEMICAL CATALYST IS ELECTROLYTICALLY DEPOSITED ON THE SURFACE OF A NONPOROUS, IMPERMEABLE, METAL SUBSTRATE, THE IMPROVEMENT IN COMBINATION THEREWITH WHICH CONSISTS ESSENTIALLY OF COATING THE THUS FORMED CATALYST-SUBSTRATE COMBINATION WITH A THIN FILM OF TETRAFLUORO-ETHYLENE RESIN, THE THICKNESS OF SAID FILM BEING SUFFICIENTLY SMALL SO AS NOT TO AFFECT THE CATALYTIC PROPERTIES OF SAID ELECTROCHEMICAL CATALYST DEPOSEITED ON SAID SUBSTRATE AND SAID FILM CONTAINING ABOUT 10**-5 TO 10**-3 GM. OF RESIN PER CM.2 OF THE ELECTRODE, WHEREBY THE ADHESION OF SAID ELECTROCHEMICAL CATALYST TO SAID SUBSTRATE IS IMPROVED.
Claim 3
Dependent Claim
37 words
AN ANODE FOR A FUEL CELL CONSITING ESSENTIALLY OF A NOBLE METAL CATALYST DEPOSITED ON A NONPOROUS, IMPERMEABLE METAL SUBSTRATE AND A THIN COATING OF TETRAFLUOROEHTYLENE RESIN BONDED ONTO THE OUTER SURFACE OF THE NOBLE METAL DEPOSIT.
Claim 4
Dependent Claim
37 words
AN ANODE FOR A FUEL CELL CONSITING ESSENTIALLY OF A NOBLE METAL CATALYST DEPOSITED ON A NONPOROUS, IMPERMEABLE METAL SUBSTRATE AND A THIN COATING OF TETRAFLUOROEHTYLENE RESIN BONDED ONTO THE OUTER SURFACE OF THE NOBLE METAL DEPOSIT.
References Cited (Backward Citations)
US3103446A
Cited
US3080440A
Cited
US3113048A
Cited
US3097974A
Cited
US3203834A
Cited
US3215562A
Cited
US3284240A
Cited
US3288653A
Cited
US3291753A
Cited
US3297482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |