US3364077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery separator and battery
Assignee: McDonnell Douglas Corp
•
Filing: 1964-06-29
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Granted: 1968-01-16
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frank C Arrance
- 👤 Jr William H Graves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:30
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/431; H01M50/434; H01M50/489; H01M50/491; H01M2300/00; H01M2300/0002; H01M2300/0014; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A BATTERY COMPRISING A PAIR OF ELECTRODES OF OPPOSITE POLARITY AND A POROUS SEPARATOR BETWEEN SAID ELECTRODES FOR RETAINING ELECTROLYTE AND PERMITTING TRANSFER OF ELECTROLYTE IONS, BUT PREVENTING INTRODUCTION OF ELECTRODE IONS THROUGH SAID SEPARATOR, SAID SEPARATOR COMPRISING A BONDED MATRIX CONSISTING ESSENTIALLY OF POTASSIUM TITANATE FIBERS AND ABOUT 2% TO ABOUT 90% BY WEIGHT OF THE SEPARATOR, OF TETRAFLUOROETHYLENE POLYMER.
Claim 2
Dependent Claim
61 words
A BATTERY COMPRISING A PAIR OF ELECTRODES OF OPPOSITE POLARITY AND A POROUS SEPARATOR BETWEEN SAID ELECTRODES FOR RETAINING ELECTROLYTE AND PERMITTING TRANSFER OF ELECTROLYTE IONS, BUT PREVENTING INTRODUCTION OF ELECTRODE IONS THROUGH SAID SEPARATOR, SAID SEPARATOR COMPRISING A BONDED MATRIX CONSISTING ESSENTIALLY OF POTASSIUM TITANATE FIBERS AND ABOUT 2% TO ABOUT 90% BY WEIGHT OF THE SEPARATOR, OF TETRAFLUOROETHYLENE POLYMER.
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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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |