US2739929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of catalyst in the hydrogenation of hydrocarbon oils
Assignee: Texaco Inc
•
Filing: 1951-08-24
•
Granted: 1956-03-27
•
Expires: 1971-08-24
Abstract
No abstract record available.
Inventors
- 👤 Hulit L Madinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:32
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/32; C10G49/00; C10G49/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |