US3567770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aryl substituted - hydroxy substituted cyclohexanecarboxylic acids and esters
Assignee: Ortho Pharmaceutical Corp
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Filing: 1967-08-02
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Granted: 1971-03-02
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Expires: 1987-08-02
Abstract
Abstract HYDROXYACIDS AND HYDROXYESTERS OF THE FORMULA: 1-(R-OOC-),2,3-DI(R''-),4-(HO-),4-AR-CYCLOHEXANE WHEREIN R IS HYDROGEN OR LOWER ALKYL, R'' IS LOWER ALKYL AND AR IS SUBSTITUTED ARYL, ARE INTERMEDIATES IN THE PREPARATION OF 2-LOWER ALKYL-3-LOWER ALKYL-4-ARCYL-CYCLOHEXENECARBOXYLIC ACIDS AND ESTERS WHICH ARE ACTIVE AGENTS FOR THE SUPPRESSION OF ANIMAL REPRODUCTION.
Inventors
- 👤 George Karmas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:04
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/60
Claims Analysis
Total Claims: 0
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |