Patent US3313128A successfully refreshed from Google Patents.
Patent US3053834A successfully refreshed from Google Patents.
US3053834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
21-phosphates of steroid acetals and ketals
Assignee: Olin Corp
•
Filing: 1961-01-26
•
Granted: 1962-09-11
•
Expires: 1981-01-26
Abstract
No abstract record available.
Inventors
- 👤 Fried Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:46
CPC Classifications
C; C07; C07J; C07J71/00; A; A61; A61K; A61K31/00; A61K31/66; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF STEROIDS OF THE GENERAL FORMUAL
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF STEROIDS OF THE GENERAL FORMUAL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |