US3471399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization catalyst and process for treating residual fuel oils
Assignee: Universal Oil Products Co
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Filing: 1967-06-09
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Granted: 1969-10-07
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Expires: 1987-06-09
Abstract
No abstract record available.
Inventors
- 👤 Mark J O'hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:58
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3169918A
Cited
US3252889A
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US3345286A
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US3383305A
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US3393148A
Cited
US3383301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |