US2459995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing hydrocarbon oil concentrates of metal sulfonates
Assignee: Standard Oil Development Co
•
Filing: 1946-02-05
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Granted: 1949-01-25
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Expires: 1966-02-05
Abstract
No abstract record available.
Inventors
- 👤 Gordon W Duncan
- 👤 John C Zimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:09
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C07; C07C; C07C309/00; C07C309/01; C07C309/62; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
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) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |