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:
Sep. 30, 2003
Filed:
May. 23, 2000
Michio Itoh, Hachioji, JP;
Shigeki Endo, Tokorozawa, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A high purity silicon carbide powder, a production method thereof, and a high purity silicon carbide sintered body are provided. The silicon carbide powder contains impurity elements, each of the impurity elements being contained in an amount of at most 0.01 ppm; the production method of silicon carbide powder includes a burning step, in which amounts of carbon monoxide generated during burning are detected and temperature adjustments are controlled in accordance with the detected amounts, and a heat treatment step, in which silicon carbide powder obtained in the burning step is heat-treated in a vacuum atmosphere; and the silicon carbide sintered body is formed by sintering silicon carbide powder.