Patent US3284448A successfully refreshed from Google Patents.
US3284448A
Expired / Lapsed
US
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19-substituted-10alpha-androstanes
Assignee: Roche Palo Alto LLC
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Filing: 1964-06-15
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Granted: 1966-11-08
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Alexander D Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:52
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A COMPOUND OF THE FOLLOWING FORMULA: 3-(R2-O-),17-R4,17-(R3-O-),19-(R1-CH(-R)-)-5-ANDROSTENE WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, TOSYLOXY, A HYDROCARBON CARBOXYLIC ACYLOXY GROUP OF LESS THAN 12 CARBON ATOMS, AND A CYANO GROUP; R1 IS HYDROGEN; R AND R1, TOGETHER, ARE SELECTED FROM THE GROUP CONSISTING OF AN OXYGEN ATOM AND A METHYLENE GROUPING; R2 AND R3 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A HYDROCARBON CARBOXYLIC ACYL GROUP OF LESS THAN 12 CARBON ATOMS AND A TETRAHYDROPYRANYL GROUPING; AND R4 IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, LOWER ALKENYL AND LOWER ALKINYL.
Claim 2
Dependent Claim
98 words
A COMPOUND OF THE FOLLOWING FORMULA: 3-(R2-O-),17-R4,17-(R3-O-),19-(R1-CH(-R)-)-5-ANDROSTENE WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, TOSYLOXY, A HYDROCARBON CARBOXYLIC ACYLOXY GROUP OF LESS THAN 12 CARBON ATOMS, AND A CYANO GROUP; R1 IS HYDROGEN; R AND R1, TOGETHER, ARE SELECTED FROM THE GROUP CONSISTING OF AN OXYGEN ATOM AND A METHYLENE GROUPING; R2 AND R3 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A HYDROCARBON CARBOXYLIC ACYL GROUP OF LESS THAN 12 CARBON ATOMS AND A TETRAHYDROPYRANYL GROUPING; AND R4 IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, LOWER ALKENYL AND LOWER ALKINYL.
References Cited (Backward Citations)
US3210389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |