Patent US158420A successfully refreshed from Google Patents.
US2482736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying oil products and process of
Assignee: —
•
Filing: —
•
Granted: 1949-09-20
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Expires: 1966-09-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:08
CPC Classifications
C; C09; C09F; C09F7/00; C07; C07C; C07C67/00; C07C67/30; C07C67/333; C07C67/343; C07C67/347
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2280862A
Cited
US2306281A
Cited
US2033131A
Cited
US2188882A
Cited
US2118308A
Cited
US2312731A
Cited
US2275843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |