US2484787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery separator
Assignee: Owens Corning
•
Filing: 1945-03-14
•
Granted: 1949-10-11
•
Expires: 1965-03-14
Abstract
No abstract record available.
Inventors
- 👤 John A Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:36
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/084; H01M; H01M50/00; H01M50/40; H01M50/403; H01M50/409; H01M50/446; H01M50/449; H01M50/451; H01M50/457; H01M50/489; H01M50/491; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US274865A
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GB412884A
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US2133183A
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US2015006A
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US2117371A
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US2311613A
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US2336797A
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US2374540A
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US2357392A
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US2306781A
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US2336745A
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US2391515A
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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) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |