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US3501509A
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US
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13-alkylgona-1,3,5(10)-triene-17-one intermediates and process
Assignee: Merck and Co Inc
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Filing: 1966-02-24
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Granted: 1970-03-17
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Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 Chan H Kuo
- 👤 David Taub
- 👤 Norman L Wendler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:16
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C49/703; C07C49/747; C07C49/753; C07D; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |