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. 30, 1997
Filed:
Apr. 26, 1996
Applicant:
Inventor:
Katsumi Ryoke, Kanagawa-ken, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24D / ;
U.S. Cl.
CPC ...
51295 ; 51309 ;
Abstract
An abrasive member comprises a substrate and an abrasive layer, which is overlaid upon the substrate and is constituted of a binder and abrasive grains dispersed therein. The abrasive grains contain aluminum oxide grains, which have the characteristics such that the sodium content, as calculated in terms of NaO, in the abrasive grains may be at most 0.1% by weight, and such that the grain diameter of .alpha.-crystal grains may be at most 5 .mu.m. The abrasive member is capable of abrading a material to be abraded such that scratches, corrosion, or the like, may not occur with the abraded material, and the abraded material having good quality may be obtained.