Urethane foam member, seal structure, toner storage container, process cartridge, image forming apparatus

US8999501B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8999501-B2
Application numberUS-27762608-A
CountryUS
Kind codeB2
Filing dateNov 25, 2008
Priority dateNov 30, 2007
Publication dateApr 7, 2015
Grant dateApr 7, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A urethane foam member that after cutting into the desired shape from sheet urethane foam is applied with adhesive on one face of the urethane foam, an edge portion of the non-adhesive applied face at least at one side of the urethane foam member being of a low edge profile, to which permanent thermal distortion has been induced such that the thickness of the edge portion of the side is thinnest at the end portion thereof and the thickness gradually increases with distance from the end portion.

First claim

Opening claim text (preview).

What is claimed is: 1. A sealing member consisting of a single layer of a urethane foam member, a skin layer provided on the urethane foam member and an adhesive layer, wherein the urethane foam member is an elongated body forming a closed loop frame comprising: a first surface comprising the adhesive layer disposed thereon; and a second surface comprising an edge portion which is opposed to the first surface, wherein a width of the elongated body increases from the edge portion…

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What does patent US8999501B2 cover?
A urethane foam member that after cutting into the desired shape from sheet urethane foam is applied with adhesive on one face of the urethane foam, an edge portion of the non-adhesive applied face at least at one side of the urethane foam member being of a low edge profile, to which permanent thermal distortion has been induced such that the thickness of the edge portion of the side is thinnes…
Who is the assignee on this patent?
Muraishi Takaya, Hatori Satoshi, Yoshino Kaoru, and 4 more
What technology area does this patent fall under?
Primary CPC classification G03G15/0886. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).