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:
Oct. 14, 2003
Filed:
Aug. 08, 2001
Applicant:
Inventors:
Noriyuki Murao, Hyogo-ken, JP;
Kazuki Miki, Himeji, JP;
Setsuo Hasegawa, Kasai, JP;
Noriyuki Okada, Hyogo-ken, JP;
Satoshi Nakai, Kasai, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 2/550 ;
U.S. Cl.
CPC ...
H01J 2/550 ;
Abstract
A ring-shaped depressed groove is formed between a joining surface of a stem insulating material with a tubular metal container and a joining surface with cathode leads and A metallized layer formed at joining surface and joining surface is separated from edges and of ring-shaped depressed groove The resulting magnetron reliably prevents discharges generated between the joining surface of the stem insulating material, with the tubular metal container, and the joining surface, with the cathode leads.