US2590126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium salts of 2, 6-lupetidine
Assignee: GD Searle LLC
•
Filing: 1948-03-10
•
Granted: 1952-03-25
•
Expires: 1968-03-10
Abstract
No abstract record available.
Inventors
- 👤 Richard A Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A NEW COMPOSITION OF MATTER HAVING THE FOLLOWING STRUCTURAL FORMULA
Claim 2
Dependent Claim
10 words
A NEW COMPOSITION OF MATTER HAVING THE FOLLOWING STRUCTURAL FORMULA
References Cited (Backward Citations)
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Cited
US1567200A
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US2064797A
Cited
US2032097A
Cited
US2170111A
Cited
US2200603A
Cited
US2295504A
Cited
US2299782A
Cited
US2355659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |