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Patent US3375260A successfully refreshed from Google Patents.
US3375260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
19-nor-9beta, 10alpha-steroids of the pregnane series
Assignee: Roche Palo Alto LLC
•
Filing: 1965-03-08
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Granted: 1968-03-26
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Bowers Albert
- 👤 Crabbe Pierre
- 👤 Edwards John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:15
CPC Classifications
C; C07; C07J; C07J5/00; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
2 words
6A, 16A-DIMETHYL-19NOR-9B,10A-$4-PREGNENE-3,20DIONE.
References Cited (Backward Citations)
US3198792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |