US2589674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aliphatic amido propyl quaternary ammonium salts
Assignee: Wyeth Holdings LLC
•
Filing: 1947-05-24
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Granted: 1952-03-18
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Expires: 1967-05-24
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Cook
- 👤 Philip H Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:48
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/461; C; C07; C07C; C07C233/00; C07C233/01; C07C233/34; C07C233/35; C07C233/36; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A QUATERNARY AMMONIUM COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
8 words
A QUATERNARY AMMONIUM COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US1737458A
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US2085706A
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US1860563A
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US2345570A
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US2329406A
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US2362760A
Cited
US2459062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |