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. 16, 1989
Filed:
Feb. 26, 1987
Applicant:
Inventor:
Minoru Matsui, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 97 ; 501 98 ;
Abstract
Silicon nitride sintered bodies are disclosed herein which each contain an intergranular phase. The intergranular phase contained in the sintered body is crystallized into diopside structure type crystals and apatite structure type crystals. The silicon nitride sintered bodies have excellent density and mechanical strength as well as extremely excellent static fatigue characteristics, and therefore are applicable as various mechanical structural parts such as engine parts, gas turbine parts, etc.