Patent US4024190A successfully refreshed from Google Patents.
US4024190A
Expired / Lapsed
US
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Novel lower alkenals
Assignee: International Flavors and Fragrances Inc
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Filing: 1976-05-05
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Granted: 1977-05-17
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Expires: 1996-05-05
Abstract
Abstract Novel lower 2-alkyldene-3-alkenals having the generic formula: ##STR1## wherein one of R 1 and R 2 is hydrogen and the other is methyl, and one of R 3 and R 4 is hydrogen and the other is an alkyl group having two or four carbon atoms, but specifically, selected from the group consisting of: Cis-2-ethylidene-trans-3-hexenal; Cis-2-ethylidene-cis-3-hexenal; Trans-2-ethylidene-trans-3-hexenal; Trans-2-ethylidene-6-methyl-cis-3-heptenal; and Trans-2-ethylidene-6-methyl-trans-3-heptenal Such alkenals being useful in altering, augmenting or enhancing organoleptic properties of foodstuffs, perfume compositions, perfumed articles and tobaccos.
Inventors
- 👤 Anne Hruza nee Sanderson
- 👤 William L. Schreiber
- 👤 Michel Van Praag
- 👤 Alan O. Pittet
- 👤 William J. Evers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:39
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0007; C11B9/0015; A; A23; A23L; A23L27/00; A23L27/20; A23L27/202; A23L27/2024; C07; C07C; C07C45/00; C07C45/004; C07C45/51; C07C45/511; C07C45/515; C07C47/00; C07C47/20; C07C47/21; C07C47/222; C07C49/00; C07C49/20; C07C49/255
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
56 words
A 2-alkylidene-3-alkenal having the formula: ##STR16## wherein one of R 1 and R 2 is hydrogen and the other is methyl and one of R 3 and R 4 is hydrogen and the other is an alkyl group containing two or four carbon atoms, selected from the group consisting of: cis-2-ethylidene-trans-3-hexenal; cis-2-ethylidene-cis-3-hexenal; trans-2-ethylidene-trans-3-hexenal; trans-2-ethylidene-6-methyl-cis-3-heptenal; and trans-2-ethylidene-6-methyl-trans-3-heptenal.
Claim 2
Dependent Claim
56 words
A 2-alkylidene-3-alkenal having the formula: ##STR16## wherein one of R 1 and R 2 is hydrogen and the other is methyl and one of R 3 and R 4 is hydrogen and the other is an alkyl group containing two or four carbon atoms, selected from the group consisting of: cis-2-ethylidene-trans-3-hexenal; cis-2-ethylidene-cis-3-hexenal; trans-2-ethylidene-trans-3-hexenal; trans-2-ethylidene-6-methyl-cis-3-heptenal; and trans-2-ethylidene-6-methyl-trans-3-heptenal.
Claim 3
Dependent Claim
14 words
A mixture consisting of 70% cis-2-ethylidene-cis-3-hexenal; 20% trans-2-ethylidene-cis-3-hexenal; and 10% diethyl acetal of cis-2-ethylidene-cis-3-hexenal.
Claim 4
Dependent Claim
14 words
A mixture consisting of 70% cis-2-ethylidene-cis-3-hexenal; 20% trans-2-ethylidene-cis-3-hexenal; and 10% diethyl acetal of cis-2-ethylidene-cis-3-hexenal.
Claim 5
Dependent Claim
8 words
The compound of claim 1 which is cis-2-ethylidene-trans-3-hexenal.
Claim 6
Dependent Claim
8 words
The compound of claim 1 which is cis-2-ethylidene-cis-3-hexenal.
Claim 7
Dependent Claim
8 words
The compound of claim 1 which is trans-2-ethylidene-trans-3-hexenal.
Claim 8
Dependent Claim
8 words
The compound of claim 1 which is trans-2-ethylidene-6-methyl-cis-3-heptenal.
Claim 9
Dependent Claim
8 words
The compound of claim 1 which is trans-2-ethylidene-6-methyl-trans-3-heptenal.
References Cited (Backward Citations)
US3970701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |