Patent US3491019A successfully refreshed from Google Patents.
US3491019A
Expired / Lapsed
US
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Hydrotreating of light cycle oils
Assignee: Universal Oil Products Co
•
Filing: 1968-08-30
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Granted: 1970-01-20
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Expires: 1988-08-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Pollitzer
- 👤 Lee Hilfman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:15
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/48; C10G45/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2903413A
Cited
US3078221A
Cited
US3169106A
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US3132086A
Cited
US3203891A
Cited
US3271301A
Cited
US3410787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |