Patent US2653156A successfully refreshed from Google Patents.
US2653156A
Expired / Lapsed
US
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Quaternary ammonium compounds and process for producing the same
Assignee: Lehn and Fink Products Corp
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Filing: 1950-06-03
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Granted: 1953-09-22
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Expires: 1970-06-03
Abstract
No abstract record available.
Inventors
- 👤 Deutsch Martin Karl
- 👤 Stobbe Hans Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
D; D06; D06M; D06M16/00; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
A QUATERNARY AMMONIUM COMPOUND HAVING DETERGENT AND GERMICIDAL PROPERTIES AND HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |