US3513028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell comprising an electrode containing a transition metal boride and a method of making a fuel cell electrode containing a coating of transition metal black
Assignee: Leesona Corp
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Filing: 1964-04-20
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Granted: 1970-05-19
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Mark Salomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:57
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
IN A FUEL CELL COMPRISING A HOUSING, AN ELECTROLYTE, A FUEL ELECTRODE, AND AN OXIDIZING ELECTRODE, THE IMPROVEMENT WHEREIN AT LEAST ONE ELECTRODE CONTAINS AT LEAST CATALYTIC AMOUNTS OF A METAL BORIDE, SAID METAL BEING A TRANSITION METAL SELECTED FROM GROUPS III-VIII OF THE MENDELYEEV''S PERIODIC TABLE.
Claim 2
Dependent Claim
47 words
IN A FUEL CELL COMPRISING A HOUSING, AN ELECTROLYTE, A FUEL ELECTRODE, AND AN OXIDIZING ELECTRODE, THE IMPROVEMENT WHEREIN AT LEAST ONE ELECTRODE CONTAINS AT LEAST CATALYTIC AMOUNTS OF A METAL BORIDE, SAID METAL BEING A TRANSITION METAL SELECTED FROM GROUPS III-VIII OF THE MENDELYEEV''S PERIODIC TABLE.
Claim 3
Independent Claim
69 words
THE METHOD FOR FORMING AN ELECTRODE FOR USE IN A FUEL CELL COMPRISING THE STEPS OF APPLYING A UNIFORM SURFACE OF METAL BLACK TO A POROUS STRUCTURE COMPRISING IMPREGNATING A POROUS STRUCTURE WITH A SOLUTION OF A GROUP VIII TRANSITION METAL SALT AND, THEREAFTER, IMPREGNATING SAID POROUS STRUCTURE WITH AN ALKALI BOROHYDRIDE, WHEREBY A COATING OF SAID TRANSISTION METAL BLACK IS FORMED IN THE INTERNAL PORES OF SAID STRUCTURE.
Claim 4
Independent Claim
69 words
THE METHOD FOR FORMING AN ELECTRODE FOR USE IN A FUEL CELL COMPRISING THE STEPS OF APPLYING A UNIFORM SURFACE OF METAL BLACK TO A POROUS STRUCTURE COMPRISING IMPREGNATING A POROUS STRUCTURE WITH A SOLUTION OF A GROUP VIII TRANSITION METAL SALT AND, THEREAFTER, IMPREGNATING SAID POROUS STRUCTURE WITH AN ALKALI BOROHYDRIDE, WHEREBY A COATING OF SAID TRANSISTION METAL BLACK IS FORMED IN THE INTERNAL PORES OF SAID STRUCTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |