US3786070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of cischrysanthemic acids
Assignee: Sanofi Aventis France
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Filing: 1970-03-02
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Granted: 1974-01-15
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Expires: 1990-03-02
Abstract
Abstract A PROCESS FOR THE PREPARATION OF RACEMIC CIS CHRYSANTHEMIC ACID OR OF THE (1R,2S) CONFIGURATION OR OF THE (1S,2R) CONFIGURATION BEGINNING RESPECTIVELY FROM RACEMIC TRANS 3,3-DIMETHYL-2-(2''-HYDROXY-2''-METHYLPROPYL)-CYCLOPROPANEL-CARBOXYLIC ACID OR OF THE (1S,2S) CONFIGURATION OR OF THE (1R,2R) CONFIGURATION.
Inventors
- 👤 J Martel
- 👤 J Buendia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:57
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C07; C07C; C07C61/00; C07C61/16; C07C61/35; C07C61/37; C07C69/00; C07C69/74; C07C69/743; C07C69/747; C07D; C07D311/00; C07D311/02; C07D493/00; C07D493/02; C07D493/04
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |