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Patent US2383972A successfully refreshed from Google Patents.
US2383972A
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Recovery of vanadim and nickel from petroleum
Assignee: Standard Oil Development Co
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Filing: 1940-06-12
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Granted: 1945-09-04
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Expires: 1960-06-12
Abstract
No abstract record available.
Inventors
- 👤 Minor C K Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
CPC Classifications
C; C01; C01G; C01G31/00; C01G9/00; C01G9/003; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G25/00; C10G25/02; C10G25/03; C10G25/12; C10G31/00
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) | 1948-09-03 | 1949-03-05 | 1949-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-03 | 1953-03-05 | 1953-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-03 | 1957-03-05 | 1957-09-04 | $7700.00 | Window Closed / Lapsed |