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:
Oct. 08, 2002
Filed:
Jun. 30, 2000
Applicant:
Inventors:
Tomoyuki Masuda, Nagano, JP;
Kousuke Shioi, Nagano, JP;
Assignee:
Showa Denko K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 3/55831 ; C04B 3/55835 ;
U.S. Cl.
CPC ...
C04B 3/55831 ; C04B 3/55835 ;
Abstract
Cubic boron nitride composite particles containing hard microparticles dispersed in cubic boron nitride particles. The hard microparticles have an average particle size of about 10 nm to about 10 &mgr;m and a particle size equal to or smaller than one-third of the particle size of any of the cubic boron nitride particles, and the amount of the hard microparticles dispersed in the cubic boron nitride particles is from about 1% to about 50% by volume.