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US3387005A
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Steroidal 4, 6-dien-3-ones having a substituted methyl group at c6 and process for producing same
Assignee: BDH Chemicals Ltd
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Filing: 1966-03-14
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Granted: 1968-06-04
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Burn Derek
- 👤 Coombs Robert Victor
- 👤 Petrow Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:18
CPC Classifications
C; C07; C07J; C07J71/00; C07J71/0005; C07J71/0026; C07J71/0031; C07J41/00; C07J41/0033; C07J41/0094; C07J43/00; C07J43/003; C07J51/00
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |