US3576873A
Expired / Lapsed
US
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Novel quaternary ammonium compounds
Assignee: HD ACQUISITION CORP A CORP OF DE
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Filing: 1967-07-05
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Granted: 1971-04-27
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Expires: 1987-07-05
Abstract
Abstract GERMICIDAL, FUNGICIDAL, AND ALGICIDAL N-B-HYDROXYPHENETHYL QUATERNARY AMMONIUM COMPOUNDS ARE OBTAINED BY REACTING TETIARY AMINES BEARING AT LEAST ONE HIGH MOLECULAR WEIGHT ALKYL OR ALKENYL GROUP WITH AN ACID AND (EPOXYETHYL) BENZENE.
Inventors
- 👤 Nathan N Crounse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:23
CPC Classifications
A; A61; A61Q; A61Q11/00; A01; A01N; A01N33/00; A01N33/02; A01N33/12; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/416
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |