US2673872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steroid intermediates
Assignee: Ohio State University Research Foundation
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Filing: 1952-11-08
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Granted: 1954-03-30
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Expires: 1972-11-08
Abstract
No abstract record available.
Inventors
- 👤 Melvin S Newman
- 👤 Swaminathan Sambasiva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:37
CPC Classifications
C; C07; C07J; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A 1-HYDROXY-L-CYANO-6-ALKOXY-8A-METHYL1,2,3,7,8,8A - HEXAHYDRONAPHTHALENE, WHERE THE ALKOXY GROUP IS SELECTED FROM THE CLASS CONSISTING OF METHOXY, ETHOXY AND PROPOXY.
Claim 2
Dependent Claim
19 words
A 1-HYDROXY-L-CYANO-6-ALKOXY-8A-METHYL1,2,3,7,8,8A - HEXAHYDRONAPHTHALENE, WHERE THE ALKOXY GROUP IS SELECTED FROM THE CLASS CONSISTING OF METHOXY, ETHOXY AND PROPOXY.
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) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |