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:
Dec. 30, 2003
Filed:
May. 07, 2001
Applicant:
Inventors:
Wako Suzuki, Tokyo, JP;
Takeshi Nobe, Tokyo, JP;
Assignee:
NEC Microwave Tube, Ltd., Kanagawa-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 2/3027 ;
U.S. Cl.
CPC ...
H01J 2/3027 ;
Abstract
A collector of a traveling wave tube in which a larger quantity of loss ceramic members are arranged between an outer collector enclosure and an outer surface of a collector electrode for increasing high frequency loss to prevent RF leakage from the collector lead wire. The collector includes a collector electrode heat conductive columnar ceramic elements an outer collector enclosure for maintaining vacuum and loss ceramic members arranged between the outer surface of the collector electrode and the inner surface of the outer collector enclosure