Patent US3103446A successfully refreshed from Google Patents.
US3103446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adhering thin
Assignee: —
•
Filing: —
•
Granted: 1963-09-10
•
Expires: 1980-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:10
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD OF ADHERING A THIN FILM OF POLYTETRAFLUOROETHYLENE TO A METAL SURFACE WHICH COMPRISES COATING THE METAL SURFACE WITH A THIN OF A TACKY THERMOSETTING PHENOLIC RESIN, SPRAY-COATING THE SURFACE OF THE TACKY RESIN FILM WITH A SMALL AMOUNT OF A WATER-IMMISCIBLE VOLATILE ORGANIC SOLVENT OF THE GROUP CONSISTING OF TOLUENE AND XYLENE WHICH IS SUFFICIENT TO DISSOLVE THE SURFACE OF THE TACKY RESIN FILM AND WITH A WATER-MOIST, NON-SPECULAR, THIN FILM OF POLYTETRAFLUOROETHYLENE BY SPRAYING TO SAID SURFACE AN AQUEOUS DISPERSION OF POLYTETRAFLUOROETHYLENE CONTAINING THE ORGANIC SOLVENT OF THE AFORESAID GROUP EMULSIFIED THEREWITH, AIR-DRYING THE FILMS ON THE METAL SURFACE FOR A TIME SUFFICIENT TO EVAPORATE A SUBSTANTIAL PROPORTION OF THE WATER AND SOLVENT THEREFROM, AND THEN BAKING THE FILMS ON THE METAL SURFACE AT A TEMPERATURE BELOW THAT AT WHICH POLYTETRAFLUOROETHYLENE IS FUSED AND FOR A TIME SUFFICIENT TO CURE THE THERMOSETTING RESIN FILM.
Claim 2
Independent Claim
147 words
A METHOD OF ADHERING A THIN FILM OF POLYTETRAFLUOROETHYLENE TO A METAL SURFACE WHICH COMPRISES COATING THE METAL SURFACE WITH A THIN OF A TACKY THERMOSETTING PHENOLIC RESIN, SPRAY-COATING THE SURFACE OF THE TACKY RESIN FILM WITH A SMALL AMOUNT OF A WATER-IMMISCIBLE VOLATILE ORGANIC SOLVENT OF THE GROUP CONSISTING OF TOLUENE AND XYLENE WHICH IS SUFFICIENT TO DISSOLVE THE SURFACE OF THE TACKY RESIN FILM AND WITH A WATER-MOIST, NON-SPECULAR, THIN FILM OF POLYTETRAFLUOROETHYLENE BY SPRAYING TO SAID SURFACE AN AQUEOUS DISPERSION OF POLYTETRAFLUOROETHYLENE CONTAINING THE ORGANIC SOLVENT OF THE AFORESAID GROUP EMULSIFIED THEREWITH, AIR-DRYING THE FILMS ON THE METAL SURFACE FOR A TIME SUFFICIENT TO EVAPORATE A SUBSTANTIAL PROPORTION OF THE WATER AND SOLVENT THEREFROM, AND THEN BAKING THE FILMS ON THE METAL SURFACE AT A TEMPERATURE BELOW THAT AT WHICH POLYTETRAFLUOROETHYLENE IS FUSED AND FOR A TIME SUFFICIENT TO CURE THE THERMOSETTING RESIN FILM.
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) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |