Patent US3267289A successfully refreshed from Google Patents.
US2807614A
Expired / Lapsed
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Quaternary ammonium compounds
Assignee: Rohm and Haas Co
•
Filing: 1955-11-09
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Granted: 1957-09-24
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Expires: 1975-11-09
Abstract
No abstract record available.
Inventors
- 👤 Earl W Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:18
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
AS A NEW COMPOSITION OF MATTER THE QUATERNARY AMMONIUM COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
AS A NEW COMPOSITION OF MATTER THE QUATERNARY AMMONIUM COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2611768A
Cited
US2706195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |