US4257923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted delta-lactones in perfume compositions
Assignee: Firmenich SA
•
Filing: 1979-09-14
•
Granted: 1981-03-24
•
Expires: 1999-09-14
Abstract
Abstract Substituted delta-lactones, viz. 6-ethyl- and 6-n-butyl-5,6-dihydro-2H-pyran-2-one, presents useful odorous properties and can be advantageously used as perfuming ingredients.
Inventors
- 👤 Sina D. Escher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:53
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0069; C11B9/0073; C11B9/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
Method for enhancing, improving or modifying the odorous properties of a perfume composition which comprises adding thereto a perfuming effective amount of 6-ethyl-5,6-dihydro-2H-pyran-2-one or 6-n-butyl-5,6-dihydro-2H-pyran-2-one to impart to said perfume composition a constant and homogeneous spicy and fruity odorous note thereto.
Claim 2
Dependent Claim
41 words
Method for enhancing, improving or modifying the odorous properties of a perfume composition which comprises adding thereto a perfuming effective amount of 6-ethyl-5,6-dihydro-2H-pyran-2-one or 6-n-butyl-5,6-dihydro-2H-pyran-2-one to impart to said perfume composition a constant and homogeneous spicy and fruity odorous note thereto.
References Cited (Backward Citations)
US3380457A
Cited
US3996170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |