US3737474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin dimerization with nickel complexes
Assignee: Phillips Petroleum Co
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Filing: 1969-12-11
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Granted: 1973-06-05
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Expires: 1989-12-11
Abstract
Abstract AN OLEFIN IS DIMERIZED BY CONTACT WITH A CATALYST FORMED FROM AN ORGANOALUMINUM COMPOUND AND A NICKEL COMPLEX OF A POLYMER SUCH AS POLY(2-VINYLPYRIDINE).
Inventors
- 👤 H Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:06
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/32; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/22
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |