US3458299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking process
Assignee: Union Oil Company of California
•
Filing: 1964-06-23
•
Granted: 1969-07-29
•
Expires: 1984-06-23
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:12
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; C; C10; C10G; C10G2400/00; C10G2400/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2560433A
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US2830880A
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US2906700A
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US3069351A
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US3077448A
Cited
GB930512A
Cited
US3144414A
Cited
US3325465A
Cited
US3329628A
Cited
US3325316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |