Patent US3669744A successfully refreshed from Google Patents.
US3669744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed nickel-hydrogen storage cell
Assignee: Individual
•
Filing: 1971-02-25
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Granted: 1972-06-13
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Expires: 1991-02-25
Abstract
Abstract THE PRESENT INVENTION RELATES TO CHEMICAL SOURCES OF ELECTRICITY, AND MORE SPECIFICALLY TO HERMETICALLY SEALED NICKEL-HYDROGEN STORAGE CELLS. A HERMETICALLY SEALED NICKEL-HYDROGEN STORAGE CELL WITH POSTIVE NICKEL-OXIDE ELECTODES AND NEGATIVE HYDROGEN ELECTRODES. ACCORDING TO THE INVENTION IS CHARACTERIZED IN THAT THE THICKNESS OF THE NEGATIVE AND POSITIVE ELECTRODES ARE IN THE RATIO OF FROM 1:1 TO 1:20; THE VOLUME OF ELECTROLYTE AND THE VOLUME OF THE PORES IN SAID ELECTRODES AND SAID SEPARATOR ARE IN THE RATIO FROM 5:10 TO 9:10; AND THERE IS 0.5X10**-3 TO X 10**-3 CUBIC METRES OF GAS PER KILOGRAM (MASS) OF NICKEL HYDROXIDE IN THE POSITIVES NICKEL-OXIDE ELECTRODE.
Inventors
- 👤 Boris Ioselevich Tsenter
- 👤 Vyacheslav Mikhailovic Sergeev
- 👤 Alexandr Ilich Kloss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:59
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/34; H01M10/345; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |