US3695937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery separators
Assignee: Raytheon Co
•
Filing: 1970-03-09
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Granted: 1972-10-03
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Expires: 1990-03-09
Abstract
Abstract IMPROVED BATTERY SEPARATOR OF HYDROPHOBIC SYNTHETIC FIBERS HAVING A BLACK MANGANESE DIOXIDE HYDROPHILIC COATING, METHOD OF PREFABRICATION AND IMPROVED BATTERIES PROVIDED THEREWITH.
Inventors
- 👤 John J Rowlette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:21
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/411; H01M50/414; H01M50/417; H01M50/423; H01M50/426; 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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |