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:
Jan. 30, 2007
Filed:
Nov. 24, 2004
Atsushi Sakon, Tokai, JP;
Toshihiko Suzuki, Nagoya, JP;
Atsushi Sakon, Tokai, JP;
Toshihiko Suzuki, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
An alumina sintered body having communicating pores of 400–1100 Å in average pore diameter and 4–16% in porosity and being obtainable by mixing first alumina particles 1 having a particle diameter of 0.2–0.7 μm and a sphericity of 0.7–1.0 as an aggregate and second alumina particles having a particle diameter of 0.01–0.1 μm as a pore forming material to embed a plurality of the second alumina particlesin the spaces between the first alumina particles, and sintering the mixture at a temperature of 1200–1400° C. The alumina sintered body can be used for a part for various gas permeable industrial materials inclusive of protective film for gas sensors, and the like.