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:
Nov. 26, 2002
Filed:
Feb. 20, 2001
Applicant:
Inventors:
Toshio Oda, Nishikasugai-Gun, JP;
Hiromichi Kobayashi, Nagoya, JP;
Tsuneaki Ohashi, Ogaki, JP;
Shinji Kawasaki, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/06 ; C03C 1/400 ; C04B 3/514 ; C04B 3/5596 ; C04B 3/5577 ;
U.S. Cl.
CPC ...
C03C 3/06 ; C03C 1/400 ; C04B 3/514 ; C04B 3/5596 ; C04B 3/5577 ;
Abstract
A composite material has a quartz glass phase and a complex compound phase compounded with the quartz glass phase, which is made of one or more compounds selected from a group of silicon carbide, silicon nitride, silicon, titanium nitride and titanium carbide, as a main ingredient. The composite material can be used instead of quartz glass, and can prevent the generations of microcrack, tipping and particles after the mechanical working.