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:
Sep. 10, 2002
Filed:
May. 03, 1999
Applicant:
Inventors:
Assignee:
Denso Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 1/00 ; B23H 9/00 ;
U.S. Cl.
CPC ...
B23H 1/00 ; B23H 9/00 ;
Abstract
A method of producing a metal mold for molding a honeycomb structure, wherein the slit grooves are formed by electric discharge machining that is executed a plural number of times by using a small electrode for electric discharge machining having a working surface of an area smaller than the area of the groove-forming surface.