Patent US3567792A successfully refreshed from Google Patents.
US3567792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diolefin-olefin condensation process
Assignee: Covestro International SA
•
Filing: 1968-12-26
•
Granted: 1971-03-02
•
Expires: 1988-12-26
Abstract
Abstract PROCESS FOR THE PREPARATION OF TRIOLEFINS COMPRISING CONDENSING DIOLEFINS AND OLEFINS IN CONTACT WITH A CATALYST SYSTEM COMPRISED OF: (1) A NICKEL SALT, (2) AN ORGANOALUMINUM COMPOUND AND (3) A SECONDARY PHOSPHINE LIGAND.
Inventors
- 👤 John E Bozik
- 👤 Harold E Swift
- 👤 Ching Yong Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:03
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/16; B01J31/24; B01J31/2404; B01J31/26; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/76; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847; C07C2527/00; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |