US4477513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate
Assignee: Mitsui Chemicals Inc
•
Filing: 1980-05-21
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Granted: 1984-10-16
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Expires: 2000-05-21
Abstract
Abstract A laminate comprises a sandwich plate of metal-thermoplastic resin-metal layers and a fiber reinforced plastics overlying at least one surface of the sandwich plate. The laminate is suitable for outer wall plates of various matters.
Inventors
- 👤 Hitoshi Koga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:10
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B29; B29C; B29C63/00; B29C63/0017; B29C63/0021; B32B15/088; B32B15/18; B32B15/20; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292; B32B2607/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/656
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
A rigid laminate which comprises a sandwich plate composed of two outer layers of a metal and an inner layer of a thermoplastic resin sandwiched in between the outer layers, at least one exterior surface of the sandwich plate having a fiber reinforced organic resin layer laminated thereon, said fiber being in the form of a filament winding
Claim 2
Dependent Claim
58 words
A rigid laminate which comprises a sandwich plate composed of two outer layers of a metal and an inner layer of a thermoplastic resin sandwiched in between the outer layers, at least one exterior surface of the sandwich plate having a fiber reinforced organic resin layer laminated thereon, said fiber being in the form of a filament winding
Claim 3
Dependent Claim
13 words
A laminate according to claim 1 in which the thermoplastic resin is polyethylene.
Claim 4
Dependent Claim
13 words
A laminate according to claim 1 in which the thermoplastic resin is polypropylene.
Claim 5
Dependent Claim
13 words
A laminate according to claim 1 in which the thermoplastic resin is polyamide.
Claim 6
Dependent Claim
15 words
A laminate according to claim 2, 3 or 4 in which the metal is aluminum.
Claim 7
Dependent Claim
15 words
A laminate according to claim 2, 3 or 4 in which the metal is iron.
References Cited (Backward Citations)
GB1001734A
Cited
US3801416A
Cited
CA991523A
Cited
GB1397955A
Cited
US4087300A
Cited
US4234653A
Cited
US4029838A
Cited
GB2038239A
Cited
US4369222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |