US3047566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6a, 6a-dihalo-6, 7-methylene steroids and method
Assignee: Leo Pharma AS
•
Filing: 1960-01-07
•
Granted: 1962-07-31
•
Expires: 1980-01-07
Abstract
No abstract record available.
Inventors
- 👤 Godtfredsen Wagn Ole
- 👤 Lusberg Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:04
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
AS AN INTERMEDIATE IN THE PRODUCTION OF 6-METHYL STEROIDS, A MEMBER OF THE GROUP CONSISTING OF $43-KETO-6A,6A-DICHLORO-6,7-METHYLENE ANDROSTENES, $4-3-KETO-6A,6A-DIBROMO-6,7-METHYLENE ANDROSTENES, $4-3KETO-6A,6A-DICHLORO-6,7-METHYLENE PREGNENES, AND $4-3-KETO-6A,6A-DIBROMO-6,7-METHYLENE PREGNENES. 13. 6A,6A - DIBROMO-6,7-METHYLENE-CORTISONE - 20-ETHYLENE-GLYCOLKETAL.
Claim 2
Dependent Claim
31 words
AS AN INTERMEDIATE IN THE PRODUCTION OF 6-METHYL STEROIDS, A MEMBER OF THE GROUP CONSISTING OF $43-KETO-6A,6A-DICHLORO-6,7-METHYLENE ANDROSTENES, $4-3-KETO-6A,6A-DIBROMO-6,7-METHYLENE ANDROSTENES, $4-3KETO-6A,6A-DICHLORO-6,7-METHYLENE PREGNENES, AND $4-3-KETO-6A,6A-DIBROMO-6,7-METHYLENE PREGNENES. 13. 6A,6A - DIBROMO-6,7-METHYLENE-CORTISONE - 20-ETHYLENE-GLYCOLKETAL.
References Cited (Backward Citations)
BE581325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |