US3371087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-halomethyl-5alpha-androstanes and -delta1-androstenes and processes for their preparation
Assignee: Roche Palo Alto LLC
•
Filing: 1966-03-25
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Granted: 1968-02-27
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Expires: 1986-03-25
Abstract
No abstract record available.
Inventors
- 👤 Colin C Beard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:53
CPC Classifications
C; C07; C07J; C07J17/00; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
STEROIDS OF THE FORMULA
Claim 2
Dependent Claim
4 words
STEROIDS OF THE FORMULA
References Cited (Backward Citations)
US3228837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |