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:
Apr. 27, 1993
Filed:
Jan. 09, 1992
Applicant:
Inventors:
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; C23F / ; B05D / ; C23C / ;
U.S. Cl.
CPC ...
156646 ; 156645 ; 156656 ; 156664 ; 156345 ; 427237 ; 427238 ; 4272481 ; 427309 ;
Abstract
A process for producing a honeycomb structure-extruding die by etching a surface of a base material for a honeycomb structure-extruding die with a gas, and coating the etched base material by CVD before an oxidized film is formed after the etching.