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. 14, 1996
Filed:
Oct. 12, 1994
Applicant:
Inventors:
Yukihisa Takeuchi, Miyoshi, JP;
Hideo Masumori, Anjo, JP;
Katsuyuki Takeuchi, Nagoya, JP;
Tsutomu Nanataki, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310358 ; 310324 ; 310328 ;
Abstract
A zirconia diaphragm structure, and a method of producing such structure. The zirconia diaphragm structure includes a zirconia substrate having at least one window, and a zirconia diaphragm plate formed integrally with the zirconia substrate so as to close each window, the zirconia substrate comprising a zirconia material as a major component, and containing 0.1-5.0% by weight of one of combinations consisting of (i) alumina and calcia, (ii) alumina, calcia and magnesia, (iii) alumina, calcia and silica, and (iv) alumina, calcia, magnesia and silica.