US3024271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3, 11, 17-trioxygenated-18-nor-d-homo-13alpha-steroids and processes for their preparation
Assignee: Laboratoires Francais de Chimiotherapie SA
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Filing: 1959-07-20
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Granted: 1962-03-06
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Expires: 1979-07-20
Abstract
No abstract record available.
Inventors
- 👤 Amiard Gaston
- 👤 Martel Jacques
- 👤 Heymes Rene
- 👤 Velluz Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:27
CPC Classifications
C; C07; C07J; C07J63/00; C07J63/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A PROCESS FOR THE PREPARTION OF 3,11,17-TRIOXYGEN ATED- 18 - NOR-D-HOMO-13A-ANDROSTANES HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
15 words
A PROCESS FOR THE PREPARTION OF 3,11,17-TRIOXYGEN ATED- 18 - NOR-D-HOMO-13A-ANDROSTANES HAVING THE STRUCTURAL FORMULA
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |