US2835698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9//10-secosteroids and process for their preparation
Assignee: Pharmacia and Upjohn Co
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Filing: 1956-01-18
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Granted: 1958-05-20
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Expires: 1976-01-18
Abstract
No abstract record available.
Inventors
- 👤 Barney J Magerlein
- 👤 John A Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:18
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/20; C07C49/213; C07C49/215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A 9//10-SECONSTEROID SELECTED FROM THE GROUP CONSISTING OF 3-HYDROXY-3//10-SEC/-1,3,5(10)-PREGNATRIENE11,20 - DIONE, 3 - HYDROXY - 9//10 - SECO - 1,3,5(10) - ISOPREGNATRIENT - 11,20 - DIONE, 3 - ACYLOXY - 9//10 - SECO1,3,5(10) - PREGNATRIENE - 11,20 - DIONE AND 3 - ACYCLOXY9//10 - SECO - 1,3,5(10 - ISOPREGNATRIENT - 11,20 - DIONE WHEREIN THE ACYL GROUP IS THE ACYL RADICAL OF A HYDROCARBON CARBOXYLI-C ACID CONTAINING FROM ONE TO EIGHT CARBON ATOMS, INCLUSIVE.
Claim 2
Dependent Claim
74 words
A 9//10-SECONSTEROID SELECTED FROM THE GROUP CONSISTING OF 3-HYDROXY-3//10-SEC/-1,3,5(10)-PREGNATRIENE11,20 - DIONE, 3 - HYDROXY - 9//10 - SECO - 1,3,5(10) - ISOPREGNATRIENT - 11,20 - DIONE, 3 - ACYLOXY - 9//10 - SECO1,3,5(10) - PREGNATRIENE - 11,20 - DIONE AND 3 - ACYCLOXY9//10 - SECO - 1,3,5(10 - ISOPREGNATRIENT - 11,20 - DIONE WHEREIN THE ACYL GROUP IS THE ACYL RADICAL OF A HYDROCARBON CARBOXYLI-C ACID CONTAINING FROM ONE TO EIGHT CARBON ATOMS, INCLUSIVE.
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |