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. 25, 2001
Filed:
Dec. 01, 1998
Applicant:
Inventors:
Masaki Kawasaki, Osaka, JP;
Masaaki Hirota, Osaka, JP;
Yoshio Hamaguchi, Osaka, JP;
Takeshi Hashimoto, Osaka, JP;
Yoji Yamamoto, Hyogo, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 1/300 ;
U.S. Cl.
CPC ...
C25D 1/300 ;
Abstract
A method of manufacturing a heater comprises: (a) washing alumina particles with warm running-water of at least 40° C.; (b) preparing a suspension for electrodeposition by suspending the washed alumina particles in a predetermined liquid; and (c) forming an alumina insulating layer made of the alumina particles on a metal wire as a heater base metal provided inside a cathode of an electron gun by electrophoresis using the suspension for electrodeposition.