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US2817664A
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Omega-haloalkyl quaternary ammonium salts and preparation thereof
Assignee: Irwin Neisler and Co
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Filing: 1954-01-25
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Granted: 1957-12-24
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Expires: 1974-01-25
Abstract
No abstract record available.
Inventors
- 👤 Cavallito Chester John
- 👤 Gray Allan Poe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:37
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS FOR THE PREPARATION OF OMEGA-HALOALKYL QUATERNARY AMMONIUM SALTS WHICH COMPRISES: ADDING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS TO AN ALKYLENE DIHALIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
24 words
A PROCESS FOR THE PREPARATION OF OMEGA-HALOALKYL QUATERNARY AMMONIUM SALTS WHICH COMPRISES: ADDING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS TO AN ALKYLENE DIHALIDE HAVING THE FORMULA:
References Cited (Backward Citations)
US2504977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |