US3432565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the hydrogenation of unsaturated hydrocarbons
Assignee: Shell USA Inc
•
Filing: 1966-05-11
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Granted: 1969-03-11
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Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Herman W Kouwenhoven
- 👤 Cornelis Th Douwes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:40
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/52; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J21/00; B01J21/02; B01J21/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2888397A
Cited
US2965564A
Cited
US3202480A
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US3217277A
Cited
US3353910A
Cited
US3352636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |