US3773793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acyl pyrones
Assignee: Zoecon Corp
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Filing: 1972-08-07
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Granted: 1973-11-20
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Expires: 1992-08-07
Abstract
Abstract PROCESS FOR THE PRODUCTION OF ALIPHATIC 2,4-DIENOIC ACIDS AND ESTERS THEREOF WHICH COMPRISES CONDENSING AN ALDEHYDE SUCH AS DEHYDROCITRONELLAL WITH AN ESTER OF BETA-METHYLGLUTACONIC ACID, ACIDIFICATION OF THE 1,4-DIACID SALT TO THE FREE 1,4-DIACID AND DECARBOXYLATION TO THE C-1 ACID AND NOVEL INTERMEDIATES.
Inventors
- 👤 C Henrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C51/00; C07C51/02; C07C51/347; C07C51/353; C07C51/377; C07C51/38; C07C59/42
Claims Analysis
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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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |