US4507348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated board-like sheet made of synthetic resin
Assignee: Mitsui Chemicals Inc
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Filing: 1983-04-05
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Granted: 1985-03-26
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Expires: 2003-04-05
Abstract
Abstract This invention relates to a corrugated board-like sheet made of a synthetic resin. More particularly, it relates to a corrugated board-like sheet made of a synthetic resin having a flap portion with hinge effect.
Inventors
- 👤 Michiaki Nagata
- 👤 Koji Nakashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:49
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/26; B32B3/28; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B65; B65D; B65D65/00; B65D65/38; B65D65/40; B65D65/403; B65D65/406; B32B2270/00; B32B2307/00; B32B2307/70; B32B2307/744; B32B2553/00; Y; Y10; Y10S; Y10S108/00; Y10S108/901; Y10S229/00; Y10S229/93; Y10S229/939; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24479; Y10T428/24612; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24727; Y10T428/24777
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
61 words
A corrugated board-like sheet made of a synthetic resin, comprising an interlining core and liners fused on both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and the interlining core are compressed and fused into one continuous layer to provide a hinge effect.
Claim 2
Dependent Claim
61 words
A corrugated board-like sheet made of a synthetic resin, comprising an interlining core and liners fused on both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and the interlining core are compressed and fused into one continuous layer to provide a hinge effect.
Claim 3
Dependent Claim
14 words
A corrugated board-like sheet according to claim 1 having a plurality of flap portions.
Claim 4
Dependent Claim
19 words
A corrugated board-like sheet according to claim 1, wherein the top surface of said sheet is a non-slip surface.
Claim 5
Dependent Claim
23 words
A corrugated board-like sheet according to claim 3, wherein the non-slip structure is formed by a number of projections on the top surface.
Claim 6
Dependent Claim
61 words
A corrugated board-like sheet according to any of claims 1, 2, 3, 4, 6 or 7 wherein the liners and the interlining core are constituted of resin material selected from the group consisting of polyethylene, ethylene-propylene copolymers containing not more than 40 mole % of ethylene, and blends of polyethylene and polypropylene containing not more than 50% by weight of polyethylene.
Claim 7
Dependent Claim
67 words
A slip sheet for conveying cargoes comprising a corrugated board-like sheet made of synthetic resin, comprising an interlining core and liners fused to both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and the interlining core are compressed and fused into one continuous layer to provide a hinge effect.
Claim 8
Dependent Claim
67 words
A slip sheet for conveying cargoes comprising a corrugated board-like sheet made of synthetic resin, comprising an interlining core and liners fused to both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and the interlining core are compressed and fused into one continuous layer to provide a hinge effect.
Claim 9
Dependent Claim
68 words
A protective material for a packaged product comprising a corrugated board-like sheet made of a synthetic resin, comprising an interlining core and liners fused on both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and interlining core are compressed and fused into one continuous layer to provide a hinge effect.
Claim 10
Dependent Claim
68 words
A protective material for a packaged product comprising a corrugated board-like sheet made of a synthetic resin, comprising an interlining core and liners fused on both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and interlining core are compressed and fused into one continuous layer to provide a hinge effect.
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) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |