US3238236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(monochloro-perfluoro-higher alkanoyl)amino-lower carboxylic acids
Assignee: Pennwalt Corp
•
Filing: 1963-05-22
•
Granted: 1966-03-01
•
Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
- 👤 Sameeh S Toukan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:48
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22; C08F20/24; C07; C07C; C07C233/00; C07C233/01; C07C233/45; C07C233/46; C07C51/00; C07C51/093; C07C51/58; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/26; C08F20/34; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
US2502478A
Cited
US2523470A
Cited
US2939888A
Cited
US2809990A
Cited
US3091643A
Cited
US3055953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |