US3331856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing transhexahydroindanones
Assignee: Wyeth Holdings LLC
•
Filing: 1964-04-16
•
Granted: 1967-07-18
•
Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Los Marinus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:04
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/12; C07C69/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US3058999A
Cited
US3067216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |