Patent US3697309A successfully refreshed from Google Patents.
US3697309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesion of fluoropolymer topcoat
Assignee: EIDP Inc
•
Filing: 1970-12-22
•
Granted: 1972-10-10
•
Expires: 1990-12-22
Abstract
Abstract A METHOD FOR IMPROVING THE ADHESION OF A FLUOROCARBON POLYMER COATING TO ITS SUBSTRATE WITH A COMPOSITION OF 10-75% OF LITHIUM POLYSILICATE, 25-90% OF A FLUOROCARBON POLYMER AND A LIQUID CARRIER.
Inventors
- 👤 Ervin R Werner Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:22
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; B05D5/083
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |