US3069428A
Expired / Lapsed
US
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Pyridine quaternary compounds
Assignee: Union Carbide Corp
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Filing: 1960-12-27
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Granted: 1962-12-18
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 John T Fitzpatrick
- 👤 George W Fowler
- 👤 Marcus Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:46
CPC Classifications
D; D06; D06M; D06M16/00; C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C08; C08F; C08F6/00; C08F6/14; C08F6/22; C08J; C08J3/00; C08J3/12; C08J3/16; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; D06M13/00; D06M13/322; D06M13/35; D06M13/46; D06M13/47; D06M13/477; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
PYRIDINE QUATERNARY COMPOUND OF 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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |