US3264301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted-4-azasteroids
Assignee: Individual
•
Filing: 1963-08-22
•
Granted: 1966-08-02
•
Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Norman J Doorenbos
- 👤 Kenneth A Kerridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
3,4-DIMETHYL-4-AZA-5A-CHOLEST-2-ENE. 8. 3-BENZYL-4-METHYL-4-AZA-5A-CHOLESTANE METHIODIDE.
Claim 2
Dependent Claim
4 words
3,4-DIMETHYL-4-AZA-5A-CHOLEST-2-ENE. 8. 3-BENZYL-4-METHYL-4-AZA-5A-CHOLESTANE METHIODIDE.
References Cited (Backward Citations)
GB863662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |