US3132088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visbreaking, deasphalting and hydrogenation of crude oils
Assignee: Gulf Research and Development Co
•
Filing: 1960-07-27
•
Granted: 1964-05-05
•
Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Beuther Harold
- 👤 Richard A Flinn
- 👤 Olaf A Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:29
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2045794A
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US2459465A
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US2559285A
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US2644785A
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US2697681A
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US2727853A
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US2848376A
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US2914457A
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US2953612A
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US2926129A
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US2943048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |