US3923899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tricyclo(5,3,1,0{hu 3.8{b )undeca-5,9-dien-2-ones
Assignee: F Hoffmann La Roche AG
•
Filing: 1974-04-12
•
Granted: 1975-12-02
•
Expires: 1994-04-12
Abstract
Abstract Tricyclo (5,4,0,03,9) undeca-5,10-dien-2-ones and tricyclo (5,4,0,03,8) undeca-5,9-dien-2-ones which are useful in the perfumery art and a process for their preparation from phenols and cyclohexenones.
Inventors
- 👤 Georg Frater
- 👤 Hans Greuter
- 👤 Hans Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:32
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/02; C07C49/00; C07C49/385; C07C49/417; C07C49/423; C07C49/453; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
12 words
A compound of claim 1 wherein R2, R5 and R6 are methyl.
Claim 4
Dependent Claim
10 words
The compound of claim 2 wherein said compound is 1,3,6-trimethyl-tricyclo(5,3,1,03,8)undeca-5,9-dien-2-one.
Claim 5
Dependent Claim
12 words
The compound of claim 1 wherein R1, R5 and R6 is methyl.
Claim 6
Dependent Claim
10 words
The compound of claim 4 wherein said compound is 1,3,9-trimethyl-tricyclo(5,3,1,03,8)undeca-5,9-dien-2-one.
Claim 7
Dependent Claim
14 words
The compound of claim 2 wherein said R1, R2, R5 and R6 are methyl.
Claim 8
Dependent Claim
10 words
The compound of claim 6 wherein said compound is 1,3,6,9-tetramethyl-tricyclo(5,3,1,03,8)undeca-5,9-dien-2-one.
References Cited (Backward Citations)
US3711553A
Cited
US3678119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |