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. 25, 2017
Filed:
Jun. 12, 2015
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Sumitomo Electric Hardmetal Corp., Hyogo, JP;
Takeshi Sato, Hyogo, JP;
Katsuko Yamamoto, Hyogo, JP;
Naohiro Toda, Hyogo, JP;
Hitoshi Sumiya, Hyogo, JP;
Yutaka Kobayashi, Hyogo, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Hyogo, JP;
Abstract
An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter+average grain diameter×0.9) or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile