Patent US2590126A successfully refreshed from Google Patents.
US2590126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium salts of 2, 6-lupetidine
Assignee: GD Searle LLC
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Filing: 1948-03-10
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Granted: 1952-03-25
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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 22:37
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)
US2152047A
Cited
US1567200A
Cited
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 |