Patent US3029256A successfully refreshed from Google Patents.
US3029256A
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Quaternary ammonium compounds having a 2-(5-oxy-y-pyronyl)methyl group
Assignee: Rohm and Haas Co
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Filing: 1959-10-23
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Granted: 1962-04-10
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Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Cook Richard Sherrard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
A; A01; A01N; A01N43/00; A01N43/02; A01N43/04; A01N43/14; A01N43/16; C; C07; C07D; C07D309/00; C07D309/34; C07D309/36; C07D309/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 3
Dependent Claim
20 words
N - DODECYLBENZYL - N - (2 - (5 - PROPIONOXY - YPYRONYL) - METHYL) - N,N - DIMETHYLAMMONIUM CHLORIDE.
Claim 4
Dependent Claim
20 words
N - DODECYLBENZYL - N - (2 - (5 - PROPIONOXY - YPYRONYL) - METHYL) - N,N - DIMETHYLAMMONIUM CHLORIDE.
References Cited (Backward Citations)
US2812350A
Cited
US2918402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |