US4068034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulation laminate of polyvinylidene fluoride, metal and plastic
Assignee: Kureha Corp
•
Filing: 1975-02-13
•
Granted: 1978-01-10
•
Expires: 1995-02-13
Abstract
Abstract Metallized plastic composite films including a metallic layer, a layer of a polyvinylidene fluoride homopolymer or copolymer and, optionally, a layer of reinforcing or other insulating material are disclosed.
Inventors
- 👤 Masahiro Segawa
- 👤 Mitsuru Ota
- 👤 Yoshiyuki Hada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B27/304; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; B32B2255/00; B32B2255/20; B32B2255/205; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/40; B32B2307/412; B32B2307/50; B32B2307/514; B32B2307/518; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/3154; Y10T428/31678; Y10T428/31688; Y10T428/31692; Y10T428/31703; Y10T428/31707
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A heat-insulating laminate comprising a layer of transparent biaxially oriented film of vinylidene fluoride homopolymer or a vinylidene fluoride copolymer which contains at at least 95 mole percent of vinylidene fluoride, an intermediate layer of a metal 0.01 to 0.5 microns in thickness and a substrate layer of plastic, foamed plastic or steel.
Claim 2
Dependent Claim
53 words
A heat-insulating laminate comprising a layer of transparent biaxially oriented film of vinylidene fluoride homopolymer or a vinylidene fluoride copolymer which contains at at least 95 mole percent of vinylidene fluoride, an intermediate layer of a metal 0.01 to 0.5 microns in thickness and a substrate layer of plastic, foamed plastic or steel.
Claim 3
Dependent Claim
36 words
The heat-insulation material of claim 1, wherein said copolymer comprises vinylidene fluoride and one or more monomers selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, monochloro trifluoroethylene vinyl fluoride, perfluorovinyl alkyl ether, vinyl acetate and ethylene.
Claim 4
Dependent Claim
22 words
The heat-insulating laminate of claim 2 wherein said copolymer comprises 95 mole percent of vinylidene fluoride and 5 mole percent of monochlorotrifluorotheylene.
Claim 5
Dependent Claim
24 words
The heat-insulation material of claim 1, wherein said metal is copper, silver, gold, magnesium, zinc, cadmium, antimony, aluminum, tin, chromium, nickel, palladium or platinum.
Claim 6
Dependent Claim
24 words
The heat-insulation material of claim 1, wherein said plastic is polyvinylchloride, polyethylene, polypropylene, ABS resin, polystyrene, natural rubber, synthetic rubber, polycarbonate, polymethylmethacrylate or polyurethane.
Claim 7
Dependent Claim
34 words
The heat-insulation material of claim 1, wherein said substrate layer is a foam selected from the group consisting of foamed polyvinylchloride, polyethylene, polypropylene, ABS resin, polystyrene, natural rubber, synthetic rubber, polycarbonate, polymethylmethacrylate, or polyurethane.
Claim 8
Dependent Claim
17 words
The heat-insulation material of claim 1, wherein said transparent film is 2 to 200 microns in thickness.
References Cited (Backward Citations)
US3152950A
Cited
US3170811A
Cited
US3449305A
Cited
US3510429A
Cited
US3655426A
Cited
US3708463A
Cited
US3799832A
Cited
US3783057A
Cited
US3940527A
Cited
US3850674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |