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:
Feb. 17, 1998
Filed:
Oct. 02, 1996
Applicant:
Inventors:
Hitoshi Onishi, Niigata-ken, JP;
Kozo Ishizaki, Otsuka-cho, Ota-ku, Tokyo, JP;
Assignees:
Alps Electric Co., Ltd., Tokyo, JP;
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24D / ; B24D / ;
U.S. Cl.
CPC ...
51307 ; 51309 ;
Abstract
The present invention provides a porous ultrafine grinder including ultrafine abrasive grains of diamond or cubic boron nitride having an average grain size of 60 .mu.m or less, and a binder which can form a fused phase by fusion with the ultrafine abrasive grains under heating. The binder is a porous material having continuous pores, and the fused phase formed in the interface of the binder and the ultrafine abrasive grains has a thickness of 1.5 .mu.m or less.