US2866779A
Expired / Lapsed
US
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Polymeric 2-hydroxyalkyl quaternary salts and process for their production
Assignee: Phillips Petroleum Co
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Filing: 1954-07-23
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Granted: 1958-12-30
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Expires: 1974-07-23
Abstract
No abstract record available.
Inventors
- 👤 James E Pritchard
- 👤 Peter J Canterino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/20; G01R15/202; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
THE N-(2-HYDROXY-2-PHENYLETHYL) QUATERNARY AMMONIUM CHLORIDE OF A POLYMER OF BUTADIENE AND 2METHYL-5-VINYLPYRIDINE.
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |