Patent US3124621A successfully refreshed from Google Patents.
US3124621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of cyclooctadiene
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:07
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0252; B01J31/0237; C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2562; B01J2231/00; B01J2231/50; B01J2231/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR ISOMERIZING AN UNCONJUGATED CYCLOOCTADIENE TO A CONJUGATED CYCLOOCTADIENE CONTAILNING THE SAME NUMBER OF CARBON ATOMS AND HYDROGEN ATOMS AS SAID STARTING CYCLOOCTADIENE, WHICH METHOD COMPRISES: CONTACTING SAID UNCONJUGATED CYCLOOCTADIENE UNDER ISOMERIZING CONDITIONS WITH AN ISOMERIZATION CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AMIDES AND ALKALINE EARTH METAL AMIDES IN THE PRESENCE OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND SUITABLE PRIMARY, SECONDARY, AND TERTIARY AMINES WHICH IS A SOLVENT FOR BOTH SAID UNCONJUGATED CYLOOCTADIENE AND SAID ISOMERIZATION CATALYST; AND RECOVERING SAID CONJUGATED CYCLOOCTADIENE.
Claim 2
Dependent Claim
91 words
A PROCESS FOR ISOMERIZING AN UNCONJUGATED CYCLOOCTADIENE TO A CONJUGATED CYCLOOCTADIENE CONTAILNING THE SAME NUMBER OF CARBON ATOMS AND HYDROGEN ATOMS AS SAID STARTING CYCLOOCTADIENE, WHICH METHOD COMPRISES: CONTACTING SAID UNCONJUGATED CYCLOOCTADIENE UNDER ISOMERIZING CONDITIONS WITH AN ISOMERIZATION CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AMIDES AND ALKALINE EARTH METAL AMIDES IN THE PRESENCE OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND SUITABLE PRIMARY, SECONDARY, AND TERTIARY AMINES WHICH IS A SOLVENT FOR BOTH SAID UNCONJUGATED CYLOOCTADIENE AND SAID ISOMERIZATION CATALYST; AND RECOVERING SAID CONJUGATED CYCLOOCTADIENE.
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |