US2861088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
11alpha, 17alpha, 21-trihydroxy-4-pregnene-3, 20-dione and esters thereof
Assignee: Pharmacia and Upjohn Co
•
Filing: 1952-04-10
•
Granted: 1958-11-18
•
Expires: 1972-04-10
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Murray
- 👤 Durey H Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:56
CPC Classifications
C; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
$4-PREGNENE-11A,17A821-TRIOL-3,20-DIONE OF THE FORMULA:
Claim 2
Dependent Claim
4 words
$4-PREGNENE-11A,17A821-TRIOL-3,20-DIONE OF THE FORMULA:
References Cited (Backward Citations)
US2183589A
Cited
US2602769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |