US3692569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-activated fluorocarbon objects
Assignee: EIDP Inc
•
Filing: 1970-02-12
•
Granted: 1972-09-19
•
Expires: 1990-02-12
Abstract
Abstract THE SURFACE ACTIVITY OF A FLUOROCARBON POLYMER HAVING THE SURFACE CHARACTER RANGNG FROM NO SURFACE ACTIVITY TO SOME SURFACE ACTITIVTY IS INCREASED BY COATING THE POLYMER WITH A COPOLYMER OF A FLUORINATED EHTYLENE AND A SULFONYL-CONTAINING FLUORINATED VINYL MONOMER. THE FLUOROCARBON POLYMER IS THEREBY RENDERED WATER-WETTABLE, PRINTABLE, AND CEMENTABLE. POROUS SHEETING OF THE SOCOATED FLUOROCARBON POLYMER IS USEFUL AS AN ELECTROCHEMICAL CELL MATRIX AND NON-POROUS, ION CONDUCTIVE SHEETING THEREOF CAN BE USED AS A FUEL CELL MEMBRANE.
Inventors
- 👤 Walther Gustav Grot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:30
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/24; B05D7/26; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2935; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |