US2917532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination process for hydrotreating and synthesizing hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1957-08-13
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Granted: 1959-12-15
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Expires: 1977-08-13
Abstract
No abstract record available.
Inventors
- 👤 Charles H Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:49
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/007; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0485
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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |