Patent US3239542A successfully refreshed from Google Patents.
US3239542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
19 nor-deta2-androstene-17beta-ol and the esters thereof
Assignee: Roche Palo Alto LLC
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Filing: 1961-08-01
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Granted: 1966-03-08
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Expires: 1981-08-01
Abstract
No abstract record available.
Inventors
- 👤 Bowers Albert
- 👤 Edwards John
- 👤 James C Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:48
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |