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:
Dec. 07, 1982
Filed:
Dec. 10, 1980
Applicant:
Inventors:
Junichiro Naito, Toyokawa, JP;
Shinichi Yamamoto, Takahama, JP;
Zituo Suzuki, Aichi, JP;
Mitsuru Asano, Okazaki, JP;
Assignee:
Nippon Soken, Inc., Nishio, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29F / ;
U.S. Cl.
CPC ...
4253 / ; 2641 / ; 2642091 ; 425380 ; 425461 ; 425463 ; 425466 ; 428116 ;
Abstract
An extrusion device comprises a die provided with feed passageways and grid-shaped extrusion slots of which width is made larger in the outer peripheral portion compared with those of the central portion of the die. By the above extrusion device, a honeycomb structure having a thicker walled outer peripheral portion can be obtained without any distortion.