US3655792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for carrying out reactions of unsaturated hydrocarbons at low temperatures
Assignee: Atlantic Richfield Co
•
Filing: 1970-11-06
•
Granted: 1972-04-11
•
Expires: 1990-11-06
Abstract
Abstract METHOD FOR CARRYING OUT ALKYLATION, POLYMERIZATION OR HYDROGEN REACTIONS OF UNSATURATED HYDROCARBONS BY CONTACTING THE UNSATURATED HYDROCARBONS SUCH AS AN OLEFIN OR AROMATIC OR COMBINATION THEREOF WITH SUNGSTEN HEXAFLUORIDE AT TEMPERATURES BETWEEN 0*C. TO 50*C.
Inventors
- 👤 Maurice M Mitchell Jr
- 👤 Harold M Fisher
- 👤 Edward S Tomezsko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/50; C07C5/52; C07C5/02; C07C5/03; C07C5/10; C07C5/11; C07C5/13; C08; C08F; C08F10/00; C07C2527/00; C07C2527/06; C07C2527/132; C07C2601/00; C07C2601/12; C07C2601/16; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
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) | 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 |