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. 14, 2006
Filed:
Jul. 29, 2004
Nobuhiro Shinohara, Kanagawa, JP;
Toshinari Watanabe, Kanagawa, JP;
Eiji Yanagisawa, Kanagawa, JP;
Naomichi Miyakawa, Kanagawa, JP;
Nobuhiro Shinohara, Kanagawa, JP;
Toshinari Watanabe, Kanagawa, JP;
Eiji Yanagisawa, Kanagawa, JP;
Naomichi Miyakawa, Kanagawa, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A method for producing a silicon nitride honeycomb filter, which comprises heat-treating in a nitrogen atmosphere a green body comprising from 50 to 85 mass % of metal silicon particles having an average particle diameter of from 5 to 50 μm, from 5 to 30 mass % of glass hollow particles having a softening temperature of from 400 to 1000° C. and from 10 to 20 mass % of an organic binder to convert metal silicon substantially to silicon nitride.