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:
Apr. 14, 1992
Filed:
Jun. 04, 1990
Katsuhito Yoshida, Itami, JP;
Kazuwo Tsuji, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
The present invention relates to hard abrasive particles comprising diamond nuclei and cubic boron nitride layers coated on said diamond nuclei and a method of producing the same. Diamond has the highest hardness but has not been used as grinding materials, abrasive compounds, cutting materials and the like of the iron group metals due to the reactivity thereof upon them at high temperatures. Accordingly, the present invention provides hard abrasive particles comprising diamond nuclei and single crystal or polycrystal cubic boron nitride layers coating a surface of said diamond nuclei, in which the diamond nuclei are connected with the cubic boron nitride layers among atoms thereof, as materials having the hardness equal to that of diamond and capable of using for the grinding, the abrasion and the like of the iron group metals and a method of producing the same.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile