US3428709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of n-perfluoboalkanoylamino-and n-perfluoroalkanoylaminoalkyl acrylamides and methacrylamides
Assignee: Novartis Corp
•
Filing: 1966-08-22
•
Granted: 1969-02-18
•
Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Eduard K Kleiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:33
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/185; C07C; C07C243/00; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285; D06M15/295; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2764602A
Cited
US2764603A
Cited
US2966481A
Cited
US3185539A
Cited
US3256231A
Cited
US3134810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |