US3911027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicyclo{8 4,3,0{9 nonenols
Assignee: Novartis Corp
•
Filing: 1974-04-15
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Granted: 1975-10-07
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Expires: 1994-04-15
Abstract
Abstract Certain polymethylbicyclo(4.3.0)non-9-en-7-ols, such as 2,2,6,7tetramethylbicyclo(4.3.0)non-9-en-7-ol, are obtained by partial dehydration of corresponding polymethylbicyclo(4.3.0)nonan-1,7diols, such as 2,2,6,7-tetramethylbicyclo(4.3.0)nonan-1,7-diol, a specific embodiment being the partial dehydration of this compound with a catalytic amount of p-toluenesulfonic acid in an inert organic solvent. The compounds obtained by this process are valuable odoriferous substances.
Inventors
- 👤 Werner Skorianetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:53
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/10; C11; C11B; C11B9/00; C11B9/0042; C11B9/0046; C11B9/0049
Claims Analysis
Total Claims: 3
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
9 words
A compound according to claim 1 which is 2,2,6,7-tetramethylbicyclo(4.3.0)nonane-1,7-diol.
References Cited (Backward Citations)
US3681464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |