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US2676987A
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Bis-alkyl benzyl quaternary ammonium salt
Assignee: California Research LLC
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Filing: 1950-12-27
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Granted: 1954-04-27
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Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Allen H Lewis
- 👤 Richard D Stayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:39
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/12; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2200603A
Cited
US2213469A
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US2276587A
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US2314111A
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US2504977A
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US2537988A
Cited
US2437833A
Cited
US2569803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |