US2878247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 6-methyl steroids of the pregnane series
Assignee: GD Searle LLC
•
Filing: 1957-09-27
•
Granted: 1959-03-17
•
Expires: 1977-09-27
Abstract
No abstract record available.
Inventors
- 👤 Luis E Miramontes
- 👤 Miguel A Romero
- 👤 O Fritsche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:25
CPC Classifications
C; C07; C07J; C07J71/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
6-METHYL-1LA, 17A-OXIDO-$5-PREGNENE-3B-OL-20-ONE
Claim 2
Dependent Claim
2 words
6-METHYL-1LA, 17A-OXIDO-$5-PREGNENE-3B-OL-20-ONE
Claim 3
Dependent Claim
9 words
LA-METHYL-1LA,17A-OXIDO-$4PREGNENE-3,20-DIONE. 3. 6A-METHYL - 16B -BROMO -$4 - PREGNENE-1MA-OL-3,20DIONE.
Claim 4
Dependent Claim
9 words
LA-METHYL-1LA,17A-OXIDO-$4PREGNENE-3,20-DIONE. 3. 6A-METHYL - 16B -BROMO -$4 - PREGNENE-1MA-OL-3,20DIONE.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |