US3170811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of fused polytetrafluoroethylene film on elastomers
Assignee: Individual
•
Filing: 1962-02-28
•
Granted: 1965-02-23
•
Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Sauds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/0423; C08J7/043; C08J7/046; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF PROVIDING A THIN FILM OF FUSED POLYTETRAFLUOROETHYLENE ON AN ELASTOMER WHICH IS ADVERSELY AFFECTED IN PHYSICAL PROPERTIES BY THE HIGH DEGREE OF HEAT REQUIRED TO FUSE POLYTETRAFLUOROETHYLENE WHICH COMPRISES COATING A THIN FILM OF BRIGHT METAL ON A SURFACE OF THE ELASTOMER, COATING A THIN FILM OF POLYTETRAFLUOROETHYLENE ON SAID METAL FILM FORM AN AQUEOUS DISPERSION OF FINELY DIVIDED POLYTETRAFLUOROETHYLENE, AIR-DRYING SAID FILM OF POLYTETRAFLUOROETHYLENE AND FUSING SAID DRIED FILM OF POLYTETRAFLUOROETHYLENE ON SAID ELASTOMER BY DIRECTING HEAT SOLELY THERETO AT A TEMPERATURE ABOVE THE FUSION POINT OF POLYTETRAFLUOROETHYLENE.
Claim 2
Independent Claim
92 words
A METHOD OF PROVIDING A THIN FILM OF FUSED POLYTETRAFLUOROETHYLENE ON AN ELASTOMER WHICH IS ADVERSELY AFFECTED IN PHYSICAL PROPERTIES BY THE HIGH DEGREE OF HEAT REQUIRED TO FUSE POLYTETRAFLUOROETHYLENE WHICH COMPRISES COATING A THIN FILM OF BRIGHT METAL ON A SURFACE OF THE ELASTOMER, COATING A THIN FILM OF POLYTETRAFLUOROETHYLENE ON SAID METAL FILM FORM AN AQUEOUS DISPERSION OF FINELY DIVIDED POLYTETRAFLUOROETHYLENE, AIR-DRYING SAID FILM OF POLYTETRAFLUOROETHYLENE AND FUSING SAID DRIED FILM OF POLYTETRAFLUOROETHYLENE ON SAID ELASTOMER BY DIRECTING HEAT SOLELY THERETO AT A TEMPERATURE ABOVE THE FUSION POINT OF POLYTETRAFLUOROETHYLENE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |