US3194840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N, n-diloweralkyl, 1, 1-dihydrogen perfluoroalkyl amine oxides
Assignee: Procter and Gamble Co
•
Filing: 1961-12-18
•
Granted: 1965-07-13
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Jim S Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:25
CPC Classifications
C; C07; C07C; C07C291/00; C07C291/02; C07C291/04; C11; C11D; C11D1/00; C11D1/004; C11D1/66; C11D1/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE CLASS OF COMPOUNDS HAVING THE FOLLOWING FORMULA
Claim 2
Dependent Claim
8 words
THE CLASS OF COMPOUNDS HAVING THE FOLLOWING FORMULA
References Cited (Backward Citations)
US2060568A
Cited
GB761001A
Cited
GB758156A
Cited
US2769824A
Cited
US2983684A
Cited
US3043779A
Cited
US3047579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |