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:
Jul. 10, 2001
Filed:
Dec. 02, 1997
Applicant:
Inventors:
Yasufumi Aihara, Nagoya, JP;
Shinji Kawasaki, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/26 ; H01L 2/1205 ;
U.S. Cl.
CPC ...
B32B 3/26 ; H01L 2/1205 ;
Abstract
A sintered ceramic part to be exposed to a corrosive gas, a surface of said ceramic part being machined, wherein each of grains exposed to the machined surface of the ceramic part is formed with a machined surface, and en edge of the machined surface of each of these grains is made round by material transfer. A process for producing such a sintered ceramic part includes the steps of: obtaining a machined body having a given shape by at least grinding a surface of a ceramic sintered body, and annealing the machined body.