US3471400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the selective hydrogenation of hydrocarbon mixtures
Assignee: IFP Energies nouvelles
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Filing: 1966-09-19
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Granted: 1969-10-07
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Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 Jean Cosyns
- 👤 Jean-Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:37
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/32; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |