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:
May. 13, 2003
Filed:
Nov. 01, 2001
Applicant:
Inventors:
Kenji Ito, Aichi-ken, JP;
Tomoaki Hata, Aichi-ken, JP;
Ikuo Sakakibara, Handa, JP;
Katsuhiko Takahashi, Aichi-ken, JP;
Assignee:
NOF Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/08 ;
U.S. Cl.
CPC ...
B22F 3/08 ;
Abstract
The present invention relates to a method for manufacturing a highly purified diamond. In the method, a copper powder having purity 99.8% or more and having an acid-insoluble impurity concentration at 50 ppm or less, and graphite are mixed at first. The mixture of the copper powder and graphite is loaded into a sample tube. The sample tube is placed in an explosive tube. Explosive is loaded in the surrounding of the sample tube. Graphite is shock-compressed by the detonation of the explosive to yield diamond.