US3793375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing polyene compounds
Assignee: F Hoffmann La Roche AG
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Filing: 1970-06-18
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Granted: 1974-02-19
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Expires: 1990-06-18
Abstract
Abstract A PROCESS FOR PRODUCING 3 - METHYL - 5 - (1-HYDROXY2,6,6 - TRIMETHYL - 4 - OXO - CYCLOHEX-2-EN-1-YL)-PENTA-2,4DINE-1-OIC ACID, DERIVATIVES THEREOF AND RELATED COMPOUNDS WHICH ARE USEFUL AS PLANT GROWTH REGULATORS, FROM 4-(1,2EPOXY-2,6,6 - TRIMETHYL - CYCLOHEX - 3 - EN-1-YL)-BUT-3-EN2-ONE OR 3 - METHYL - 5 - (1,2 - EPOXY-2,6,6-TRIMETHYLCYCLOHEX-3-EN-1-YL)-PENTA-2,4-DIENYL DERIVATIVES INCLUDING INTERMEDIATES IN THIS PROCESS.
Inventors
- 👤 U Schwieter
- 👤 N Rigassi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:51
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/38; C07D303/46; C07C; C07C403/00; C07C403/06; C07C403/08; C07C403/12; C07C403/14; C07C403/16; C07C403/20; C07D233/00; C07D233/04; C07D233/20; C07D233/22; C07D303/12; C07D303/32; C07D303/40; C07C2601/00; C07C2601/12; C07C2601/16
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |