US2066596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making porous separators
Assignee: Exide Technologies LLC
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Filing: 1934-08-09
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Granted: 1937-01-05
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Expires: 1954-08-09
Abstract
No abstract record available.
Inventors
- 👤 Alan A West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:49
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/34; B29C41/36; B29C41/02; B29C41/12; B29C41/42; H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/489; B29K; B29K2007/00; B29K2021/00; B29L; B29L2007/00; B29L2007/001; B29L2031/00; B29L2031/34; B29L2031/3468; 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) | 1940-01-05 | 1940-07-06 | 1941-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-05 | 1944-07-06 | 1945-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-05 | 1948-07-06 | 1949-01-05 | $7700.00 | Window Closed / Lapsed |