US2670360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium salts of basic derivatives of substituted cinnamic acids and methods of producing same
Assignee: Mathieson Chemical Corp
•
Filing: 1951-11-30
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Granted: 1954-02-23
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 William A Lott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
5 words
COMPOUNDS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2139687A
Cited
US2310973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |