US3546104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization of petroleum hydrocarbons containing asphaltenes
Assignee: Eneos Corp
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Filing: 1968-05-08
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Granted: 1970-12-08
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Expires: 1988-05-08
Abstract
No abstract record available.
Inventors
- 👤 Tsutomu Kuwata
- 👤 Yutaka Oguchi
- 👤 Hirotsugu Nomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:03
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J23/883; B01J37/00; B01J37/02; B01J37/03; B01J37/036; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2799661A
Cited
US2913400A
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US3016347A
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US3016348A
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US3169827A
Cited
US3169931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |