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. 19, 2008
Filed:
Jan. 12, 2004
Applicants:
Yoji Yamamoto, Nishinomiya, JP;
Mika Yamagishi, Takatsuki, JP;
Satoru Nakagawa, Takatsuki, JP;
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/24 (2006.01); H01J 19/18 (2006.01); H01J 19/10 (2006.01); H01J 19/48 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cathode structure comprises a heater including a columnar ceramic body and a heating wire that is partially buried in the ceramic body, and a cathode unit disposed at a first end surface of the ceramic body. The heating wire leads out from a second end surface of the ceramic body.