Patent US3248313A successfully refreshed from Google Patents.
US3248313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of cyclododecatriene
Assignee: Phillips Petroleum Co
•
Filing: 1961-07-26
•
Granted: 1966-04-26
•
Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Donald L Crain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:23
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/2206; C07C5/2226; C07C5/2246; C07C2527/00; C07C2527/06; C07C2527/08; C07C2601/00; C07C2601/18; C07C2601/20; Y; Y10; Y10S; Y10S204/00; Y10S204/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD FOR FORMING TRANS,TRANS,TRANS-1,5,9-CYCLODODECATRIENE, SAID METHOD COMPRISING THE STEPS OF CONTACTING A TRANS,TRANS,CIS-1,5,9-CYCLODODECATRIENE HAVING THE GENERAL FORMULA C12 H15R3, WHERE R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL, WITH AN ANHYDROUS HYDROGEN HALIDE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN BROMIDE AND HYDROGEN IODIDE IN THE PRESENCE OF IONIZING RADIATION, MAINTAINING A MOL RATIO OF LESS THAN 0.2 BETWEEN SAID HYDROGEN HALIDE AND SAID CYCLODODECATRIENE AND RECOVERING TRANS,TRANS,TRANS-1,5,9-CYCLODODECATRIENE FROM THE RESULTING REACTION MIXTURE.
Claim 2
Independent Claim
77 words
A METHOD FOR FORMING TRANS,TRANS,TRANS-1,5,9-CYCLODODECATRIENE, SAID METHOD COMPRISING THE STEPS OF CONTACTING A TRANS,TRANS,CIS-1,5,9-CYCLODODECATRIENE HAVING THE GENERAL FORMULA C12 H15R3, WHERE R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL, WITH AN ANHYDROUS HYDROGEN HALIDE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN BROMIDE AND HYDROGEN IODIDE IN THE PRESENCE OF IONIZING RADIATION, MAINTAINING A MOL RATIO OF LESS THAN 0.2 BETWEEN SAID HYDROGEN HALIDE AND SAID CYCLODODECATRIENE AND RECOVERING TRANS,TRANS,TRANS-1,5,9-CYCLODODECATRIENE FROM THE RESULTING REACTION MIXTURE.
References Cited (Backward Citations)
US2058466A
Cited
US2307552A
Cited
US2398481A
Cited
US2964574A
Cited
US2979543A
Cited
US3007974A
Cited
US3025329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |