Patent US1779409A successfully refreshed from Google Patents.
US3288652A
Expired / Lapsed
US
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Riveted fuel cell electrode assembly
Assignee: Leesona Corp
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Filing: 1962-03-27
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Granted: 1966-11-29
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Expires: 1982-03-27
Abstract
No abstract record available.
Inventors
- 👤 Stanley L Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:05
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/8605; H01M4/8626; H01M4/8631; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A FUEL CELL BIPOLAR ELECTRODE ASSEMBLY COMPRISING A FIRST CIRCULAR ELECTRODE, A FIRST ANNULAR SPACING RING, A CIRCULAR GAS IMPERVIOUS BARRIER, A SECOND ANNULAR SPACING RING, AND A SECOND ELECTRODE STACKED IN THAT ORDER AND AXIALLY ALIGNED AND HAVING COMMON PERIPHERAL DIMENSIONS, A RIVET PASSING AXIALLY THROUGH SAID ELECTRODES INTERNALLY OF THE PERIPHERY AND A PAIR OF SPACING WASHERS ON SAID RIVET, EACH SPACING WASHER BEING POSITIONED IN THE PLACE OF ONE OF SAID ANNULAR SPACING RINGS, AND SOLDER MEANS
Claim 2
Dependent Claim
80 words
A FUEL CELL BIPOLAR ELECTRODE ASSEMBLY COMPRISING A FIRST CIRCULAR ELECTRODE, A FIRST ANNULAR SPACING RING, A CIRCULAR GAS IMPERVIOUS BARRIER, A SECOND ANNULAR SPACING RING, AND A SECOND ELECTRODE STACKED IN THAT ORDER AND AXIALLY ALIGNED AND HAVING COMMON PERIPHERAL DIMENSIONS, A RIVET PASSING AXIALLY THROUGH SAID ELECTRODES INTERNALLY OF THE PERIPHERY AND A PAIR OF SPACING WASHERS ON SAID RIVET, EACH SPACING WASHER BEING POSITIONED IN THE PLACE OF ONE OF SAID ANNULAR SPACING RINGS, AND SOLDER MEANS
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |