US2734897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chacoo
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:40
CPC Classifications
C; C07; C07J; C07J9/00; C07J71/00; C07J71/0005; C07J71/001; C07J71/0015; C07J9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
$7 - 7 - ALKANOYLOXY - CYCLOPENTANOPOLYHYDROPHENANTHRENE COMPOUNDS SELECTED FROM THE GROUP WHICH CONSISTS OF $7,9(11),22-3,7-DI(LOWER ALKANOYLOXY)-ERGOSTATRIENE, $7,9(11)-7-(LOWER ALKANOYLOXY)-BISDEHYDROTIGOGENIN LOWER ALKANOATE, $7,22-3-7-DI(LOWER ALKANOYLOXY)-9,11EPOXY-ERGOSTADIENE, $7-7-(LOWER ALKANOYLOXY)-9,11-EPOXYDEHYDROTIGOGENIN LOWER ALKANOATE AND LOWER ALKYL $7-3,7-DI(LOWER ALKANOYLOXY)-9,11-EPOXY-CHOLENATE.
Claim 2
Dependent Claim
32 words
$7 - 7 - ALKANOYLOXY - CYCLOPENTANOPOLYHYDROPHENANTHRENE COMPOUNDS SELECTED FROM THE GROUP WHICH CONSISTS OF $7,9(11),22-3,7-DI(LOWER ALKANOYLOXY)-ERGOSTATRIENE, $7,9(11)-7-(LOWER ALKANOYLOXY)-BISDEHYDROTIGOGENIN LOWER ALKANOATE, $7,22-3-7-DI(LOWER ALKANOYLOXY)-9,11EPOXY-ERGOSTADIENE, $7-7-(LOWER ALKANOYLOXY)-9,11-EPOXYDEHYDROTIGOGENIN LOWER ALKANOATE AND LOWER ALKYL $7-3,7-DI(LOWER ALKANOYLOXY)-9,11-EPOXY-CHOLENATE.
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) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |