Patent US2359504A successfully refreshed from Google Patents.
Patent US3900658A successfully refreshed from Google Patents.
US3900658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyfluorocarbon article and method for making the same
Assignee: Daikin Industries Ltd
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Filing: 1973-07-12
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Granted: 1975-08-19
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Expires: 1993-07-12
Abstract
Abstract A polyfluorocarbon film or sheet which has adhering ability onto self-supporting materials by the use of conventional adhesives is produced by subjecting a metal surface to chemical metallization to form a chemically metallizing layer, coating a polyfluorocarbon coating composition on the layer, drying, sintering and then peeling off the produced film or sheet having the layer on one side from the metal surface.
Inventors
- 👤 Tuneo Fujii
- 👤 Yukiharu Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:30
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; B05D5/083; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
A SINTERED POLYFLOROCARBON FILM OR SHEET HAVING A CHEMICALLY METALLIZING LAYER ON ONE SIDE IN ORDER TO IMPROVE THE ADHESIVENESS OF SAID FILM OR SHEET WHEREIN SAID POLYFLOUROCARBON IS SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLOROETHYLENE AND A COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE AND SAID CHEMICALLY METALLIZING LAYER COMPRISING A WATER-INSOLUBLE CHEMICALLY METALLIZING LAYER COMPRISING A WATER-INSOLUTHE GROUP CONSISTING OF IRON, COPPER, ZINC, MANGANESE, CHROMIUM, SODIUM, POTASSIUM, AND ALUMINUM, WHEREIN SAID FILM OR SHEET CONSISTS ESSENTIALLY OF SAID POLYFLUOROCARBON AND SAID CHEMICALLY METALLIZING LAYER.
Claim 2
Dependent Claim
84 words
A SINTERED POLYFLOROCARBON FILM OR SHEET HAVING A CHEMICALLY METALLIZING LAYER ON ONE SIDE IN ORDER TO IMPROVE THE ADHESIVENESS OF SAID FILM OR SHEET WHEREIN SAID POLYFLOUROCARBON IS SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLOROETHYLENE AND A COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE AND SAID CHEMICALLY METALLIZING LAYER COMPRISING A WATER-INSOLUBLE CHEMICALLY METALLIZING LAYER COMPRISING A WATER-INSOLUTHE GROUP CONSISTING OF IRON, COPPER, ZINC, MANGANESE, CHROMIUM, SODIUM, POTASSIUM, AND ALUMINUM, WHEREIN SAID FILM OR SHEET CONSISTS ESSENTIALLY OF SAID POLYFLUOROCARBON AND SAID CHEMICALLY METALLIZING LAYER.
Claim 3
Dependent Claim
36 words
The sintered polyfluorocarbon film or sheet of claim 1, wherein said chemically metallizing layer is selected from the group consisting of zinc phosphate, zinc fluoride, aluminum fluoride, manganese phosphate, copper oxide, aluminum oxide and chromium oxide.
Claim 4
Dependent Claim
19 words
The sintered polyfluorocarbon film or sheet of claim 1 having a thickness of from 5 to 100 Mu .
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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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |