US3261830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-keto-delta-19-nor-derivatives of cortical hormones
Assignee: Roche Palo Alto LLC
•
Filing: 1963-07-09
•
Granted: 1966-07-19
•
Expires: 1983-07-09
Abstract
No abstract record available.
Inventors
- 👤 Bowers Albert
- 👤 Halpern Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:11
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/911
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)
US3178419A
Cited
US3206460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |