US2994699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ketonic quaternary ammonium compounds
Assignee: Rohm and Haas Co
•
Filing: 1959-01-29
•
Granted: 1961-08-01
•
Expires: 1979-01-29
Abstract
No abstract record available.
Inventors
- 👤 Benneville Peter L De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:19
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10; C07D295/104; C07D295/108; A; A01; A01N; A01N35/00; A01N35/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
THE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
THE COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
5 words
THE COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
5 words
THE COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2198260A
Cited
US2721220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |