Patent US2876265A successfully refreshed from Google Patents.
US2876265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparation of unsaturated
Assignee: —
•
Filing: —
•
Granted: 1959-03-03
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Expires: 1976-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:14
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/02; C07C31/125; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C29/149; B; B01; B01J; B01J23/00; B01J23/002; C07C53/00; C07C53/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD FOR PRODUCING UNSATURATED FATTY ALCOHOLS COMPRISING CONTINUOSLY HYDROGENATING A SUBSTANCE FROM THE GROUP CONSISTING OF UNSATURARED CARBOXYL ALIPHATIC ACIDS HAVING A HIGH MOLECULAR WEIGHT AND THE ESTERS OF SAID ACIDS IN THE PRESENCE OF A CATALYST CONSISTING OF CHROME OXIDE, ZINC OXIDE AND ALUMINUM OXIDE, THE ALUMINUM OXIDE BEING BETWEEN 3 AND 13.5% BY WEIGHT OF THE ZINC OXIDE, THE MOLECULAR PROPORTION OF ALUMINUM AND ZINC OXIDES TO CHROMIUM OXIDE BEING SUBSTANTIALLY EQUAL TO ONE.
Claim 2
Independent Claim
77 words
A METHOD FOR PRODUCING UNSATURATED FATTY ALCOHOLS COMPRISING CONTINUOSLY HYDROGENATING A SUBSTANCE FROM THE GROUP CONSISTING OF UNSATURARED CARBOXYL ALIPHATIC ACIDS HAVING A HIGH MOLECULAR WEIGHT AND THE ESTERS OF SAID ACIDS IN THE PRESENCE OF A CATALYST CONSISTING OF CHROME OXIDE, ZINC OXIDE AND ALUMINUM OXIDE, THE ALUMINUM OXIDE BEING BETWEEN 3 AND 13.5% BY WEIGHT OF THE ZINC OXIDE, THE MOLECULAR PROPORTION OF ALUMINUM AND ZINC OXIDES TO CHROMIUM OXIDE BEING SUBSTANTIALLY EQUAL TO ONE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |