Patent US2645593A successfully refreshed from Google Patents.
US2645593A
Expired / Lapsed
US
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Quaternary ammonium naphthenate and method of making the same
Assignee: Individual
•
Filing: 1951-02-09
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Granted: 1953-07-14
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Expires: 1971-02-09
Abstract
No abstract record available.
Inventors
- 👤 Erskine Archibald Mortimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:44
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
N-ALKYLBENZYL-TRIMETHYL AMMONIUM NAPHTHENATE HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
N-ALKYLBENZYL-TRIMETHYL AMMONIUM NAPHTHENATE HAVING THE FORMULA
References Cited (Backward Citations)
US2271707A
Cited
GB499203A
Cited
US2314111A
Cited
US2372535A
Cited
US2424158A
Cited
US2544732A
Cited
US2519924A
Cited
US2569408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |