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:
Aug. 29, 1989
Filed:
Jan. 06, 1988
Applicant:
Inventors:
Masahiro Ihara, Munakata, JP;
Kazuo Suzuki, Inazawa, JP;
Hideya Maekawa, Tokai, JP;
Haremi Ito, Tokoname, JP;
Kenichi Tanaka, Aichi, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29F / ;
U.S. Cl.
CPC ...
427133 ; 427135 ; 249115 ; 2491141 ; 425462 ; 425463 ;
Abstract
An extrusion die an be produced and reclaimed precisely, quickly and easily in an economical way, possesses a high abrasive-resistant property and a prolonged life, produces light-weight honeycomb structures having thin partition walls and provides a large reaction surface area within the honeycomb structure for the catalyst to contact with the exhaust gases, in addition to smooth passage of the exhaust gases with little pressure loss thereof, and mitigates or eliminates the drawbacks of conventional dies.