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. 30, 1989
Filed:
Feb. 18, 1988
Applicant:
Inventors:
Satoru Inoue, Aichi, JP;
Mitsuaki Watanabe, Inazawa, JP;
Assignee:
NGK Industries, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29F / ;
U.S. Cl.
CPC ...
425464 ; 164138 ; 26417711 ; 26417712 ; 425D / ; 427 35 ; 427 37 ;
Abstract
An extrusion-forming jig for extruding a ceramic batch to regulate a sectional shape and external dimensions of a honeycomb structure is formed by the extrusion. The jig includes electric discharge coating layers on surfaces of the jig contacting the ceramic batch. The electric discharge coating layers are made of a cemented carbide such as tungsten carbide. The jig is able to be used for many hours without necessitating replacement.