Patent US3914747A successfully refreshed from Google Patents.
Patent US3423243A successfully refreshed from Google Patents.
US3423243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current collection means for fuel cells
Assignee: Union Carbide Corp
•
Filing: 1962-07-30
•
Granted: 1969-01-21
•
Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Karl V Kordesch
- 👤 John F Yeager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:59
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/0247; H01M8/0252; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN COMBINATION A FUEL CELL INCLUDING AT LEAST ONE ELECTRODE HAVING (1) AN ELECTROCHEMICALLY ACTIVE ELECTROLYTE SURFACE AND A NON-ACTIVE FUEL OR OXIDANT SURFACE, AND (2) A CURRENT COLLECTION MEANS COMPRISING A CENTRAL CORE DISPOSED ADJACENT SAID NON-ACTIVE SURFACE AND A PLURALITY OF CONDUCTING BRISTLES, EACH BRISTLE HAVING ONE END ATTACHED TO SAID CORE AND THE OTHER END IN ELECTRICAL CONTACT WITH SAID NON-ACTIVE SURFACE, SAID BRISTLES MAKING
Claim 2
Dependent Claim
68 words
IN COMBINATION A FUEL CELL INCLUDING AT LEAST ONE ELECTRODE HAVING (1) AN ELECTROCHEMICALLY ACTIVE ELECTROLYTE SURFACE AND A NON-ACTIVE FUEL OR OXIDANT SURFACE, AND (2) A CURRENT COLLECTION MEANS COMPRISING A CENTRAL CORE DISPOSED ADJACENT SAID NON-ACTIVE SURFACE AND A PLURALITY OF CONDUCTING BRISTLES, EACH BRISTLE HAVING ONE END ATTACHED TO SAID CORE AND THE OTHER END IN ELECTRICAL CONTACT WITH SAID NON-ACTIVE SURFACE, SAID BRISTLES MAKING
References Cited (Backward Citations)
US284342A
Cited
US470073A
Cited
US744216A
Cited
FR428329A
Cited
US1359881A
Cited
US2117596A
Cited
US2275281A
Cited
US2384463A
Cited
US2969315A
Cited
US3147149A
Cited
US3146131A
Cited
US3162549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |