Patent US2845471A successfully refreshed from Google Patents.
US2845471A
Expired / Lapsed
US
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Primary cell
Assignee: Dow Chemical Co
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Filing: 1955-08-08
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Granted: 1958-07-29
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Charles W Glesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:07
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08; H01M50/00; H01M50/10; H01M50/172; H01M50/174; H01M50/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1115458A
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US905952A
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US1048773A
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US1352834A
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US2198423A
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US2490598A
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US2474716A
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US2536697A
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US2547908A
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US2697738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |