US2391631A
Expired / Lapsed
US
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Compositions and processes
Assignee: EIDP Inc
•
Filing: 1943-03-05
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Granted: 1945-12-25
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Expires: 1963-03-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard W Kingerley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:58
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/16; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/042; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
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) | 1948-12-24 | 1949-06-25 | 1949-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-24 | 1953-06-25 | 1953-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-24 | 1957-06-25 | 1957-12-25 | $7700.00 | Window Closed / Lapsed |