US2444328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of matter
Assignee: Baker Petrolite LLC
•
Filing: 1945-09-12
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Granted: 1948-06-29
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Expires: 1965-09-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles M Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:46
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/02; C10M129/68; C10M129/72; C10M129/70; C10M2203/00; C10M2203/10; C10M2203/108; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/20; C10M2207/00; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/04; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2221/00; C10M2221/04; C10N; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |