US3647792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic pyrazines
Assignee: International Flavors and Fragrances Inc
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Filing: 1970-05-04
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Granted: 1972-03-07
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Expires: 1990-05-04
Abstract
Abstract PROCESS FOR ALTERING THE FLAVORS OF PRODUCTS, INCLUDING FOODSTUFFS AND TOBACCOS, WHICH COMPRISE ADDING THERETO A SMALL BUT EFFECTIVE AMOUNT OF AT LEAST ONE HETEROCYCLIC PYRAZINE HAVING THE FORMULA: 2-R1,3-R2,5,6-(-CH2-Y-CH2-)(-R3)(-R4)(-R5)(-R6)PYRAZINE WHEREIN Y IS -O-,-S-,-CH2-O-,ORCH2-S-, AND R1,R2,R3,R4,R5,AND R6 ARE THE SAME OR DIFFERENT AND REPRESENT HYDROGEN AND LOWER ALKYL; THE PRODUCTS SO PRODUCED; FLAVORING AND FLAVOR-ENHANCING COMPOSITIONS CONTAINING SUCH HETEROCYCLIC PYRAZINES; AND NOVEL HETEROCYCLIC PYRAZINES AND PROCESSESSES FOR THEIR PRODUCTION.
Inventors
- 👤 William J Evers
- 👤 Richard A Wilson
- 👤 Ernst T Theimer
- 👤 Ira Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:03
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/30; A24B15/36; A24B15/38; A23; A23L; A23L27/00; A23L27/20; A23L27/205; A23L27/2054; C; C07; C07D; C07D241/00; C07D241/02; C07D241/10; C07D241/12; C11; C11B; C11B9/00; C11B9/0069; C11B9/0092; C11B9/0096
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |