The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2001
Filed:
Sep. 14, 1998
Tooru Sakaguchi, Tokyo, JP;
Tsuneo Kawamura, Tokyo, JP;
Shin-Kobe Electric Machinery Co., Ltd., Tokyo, JP;
Abstract
A polished-piece holder capable of preventing a polished piece from taking scratches, being increased in wear resistance, thickness accuracy, warpage resistance and dimensional stability, and preventing a deterioration in polishing accuracy. The polished-piece holder includes a core layer and a wear-resistant surface layer laminated on at least one of front and rear surfaces of the core layer. The core layer is constituted of at least one thermosetting resin impregnated fibrous layer and the surface layer is likewise constituted of a thermosetting resin impregnated fibrous layer. The thermosetting resin impregnated fibrous layer constituting the surface layer is subject to heating and pressurizing, to thereby provide a prepreg wherein a nonwoven aramid fiber substrate is impregnated with thermosetting resin.