US2808399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
20-arylazo-5, 17(20)-pregnadien-3, 16alpha-diols and esters thereof
Assignee: GD Searle LLC
•
Filing: 1954-12-01
•
Granted: 1957-10-01
•
Expires: 1974-12-01
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Dodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:20
CPC Classifications
C; C07; C07J; C07J41/00; C07J41/0033; C07J41/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE STRUCTURAL 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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |