US3106487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for imparting plastic release characteristics to polytetrafluoroethylene andapparatus embodying same
Assignee: Dow Chemical Co
•
Filing: 1960-05-19
•
Granted: 1963-10-08
•
Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 John R Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:03
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10S; Y10S425/00; Y10S425/055; Y10T; Y10T428/00; Y10T428/25; Y10T428/258; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A METHOD FOR IMPARTING PLASTIC RELEASE CHARACTERISTICS TO A SOLID POLYTETRAFLUORETHYLENE SURFACE BY DEPOSITING ON SAID SURFACE AN ADHERENT DEPOSIT OF FROM 0.001 TO 0.01 INCH IN THICKNESS OF SMALL CRYSTALS OF INDIVIDUAL SIZE NO GREATER THAN 0.01 INCH OF A WATER-SOLUBLE, CRYSTALLINE, INORGANIC SALT PRACTICALLY COVERING SAID SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |