US3655810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dimerizing and codimerizing olefins
Assignee: IFP Energies nouvelles
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Filing: 1967-11-14
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Granted: 1972-04-11
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Expires: 1987-11-14
Abstract
Abstract A PROCESS FOR DIMERIZING AND CODIMERIZING MONOOLEFINS WHEREIN AT LEAST ONE OF SAID MONOOLEFINS IS CONTACTED WITH A CATALYST TO EFFECT REACTION THEREOF, SAID CATALYST CONTAINING A MONOHALOGENODIHYDROCARBYLALUMINUM AND NICKEL OR A NICKEL COMPOUND, AND SAID PROCESS BEING CHARACTERIZED IN THAT THE REACTION IS CONUCTED IN THE PRESENCE OF WATER IN AN AMOUNT SUFFICIENT TO INCREASE SIGNIFICANTLY THE ACTIVITY OF SAID CATALYST.
Inventors
- 👤 Yves Chauvin
- 👤 Gilles Lefebvre
- 👤 Masahiro Uchino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:59
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J31/16; B01J31/24; B01J31/2404; B01J31/26; B01J31/28; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C07C2/32; C07C2/34; C07C2/36; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/2234; B01J31/2282; B01J31/2295; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/06; C07C2527/128; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/20; C07C2531/22; C07C2531/24; C07C2531/26; C07C2531/28; C07C2531/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |