US2962499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain esters of tropine and tropinium salts
Assignee: ENDO LAB
•
Filing: 1957-07-03
•
Granted: 1960-11-29
•
Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Weiner Nathan
- 👤 Samuel M Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:37
CPC Classifications
C; C07; C07D; C07D451/00; C07D451/02; C07D451/04; C07D451/06; C07D451/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
MEMBERS OF THE GROUP CONSISTING OF
Claim 2
Dependent Claim
6 words
MEMBERS OF THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2828312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |