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US3836563A
Expired / Lapsed
US
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3-thioacetyl or benzoyl-alkane-1,4-diones
Assignee: International Flavors and Fragrances Inc
•
Filing: 1973-08-07
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Granted: 1974-09-17
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Expires: 1993-08-07
Abstract
Abstract NOVEL 3-THIA-1,4 DIONES HAVING THE STRUCTURE: R1-CO-C(-R6)(-S-R3)-CH(-R4)-CO-R2 WHEREIN R1 AND R2 ARE THE SAME OR DIFFERENT AND ARE EITHER HYDROGEN OR LOWER ALKYL, R3 IS EITHER HYDROGEN, LOWER ALKYL, ACYL, AROYL, BENZYL OR PHENYL AND EACH OF R4 AND R6 ARE THE SAME OR DIFFERENT AND ARE EITHER HYDROGEN OR LOWER ALKYL, SUCH 3-THIA-1,4 ALKANE DIONES BEING USEFUL IN ALTERING THE ORGANOLEPTIC PROPERTIES OF FOODSTUFFS.
Inventors
- 👤 B Mayer
- 👤 W Evers
- 👤 H Heinsohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:24
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/64; A; A23; A23L; A23L27/00; A23L27/20; C07C; C07C327/00
Claims Analysis
Total Claims: 0
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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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |