Patent US3328431A successfully refreshed from Google Patents.
US3328431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6alpha-monofluoromethyl, 6alpha-difluoromethyl and 6alpha-trifluoromethyl progestational hormone derivatives
Assignee: Roche Palo Alto LLC
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Filing: 1960-11-10
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Granted: 1967-06-27
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Expires: 1980-11-10
Abstract
No abstract record available.
Inventors
- 👤 Bowers Albert
- 👤 Edwards John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:32
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |