US3299048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3alpha, 5alpha-epoxy methano-steroidal compounds and process for the production thereof
Assignee: Shionogi and Co Ltd
•
Filing: 1964-04-15
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Granted: 1967-01-17
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Nagata Wataru
- 👤 Sugasawa Tsutomu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:59
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS FOR FORMATION OF A DOUBLE BOND IN STEROIDS WHICH COMPRISEES: (1) TREATING A 9,11-STAURATED $4-3-OXOSTEROID HAVING A STRUCTURE REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
24 words
A PROCESS FOR FORMATION OF A DOUBLE BOND IN STEROIDS WHICH COMPRISEES: (1) TREATING A 9,11-STAURATED $4-3-OXOSTEROID HAVING A STRUCTURE REPRESENTED BY THE 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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |