Cathode for magnetron

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United States of America Patent

PATENT NO 6420821
SERIAL NO

09489339

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Abstract

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A cathode for a magnetron having concave/convex portions on a surface of a cylindrical base metal with thermionic emitting materials being fixedly attached to concave portions from among the concave/convex portions. The convex portions of the concave/convex portions are arranged to be inclining. It is enabled to effectively protect thermionic emitting materials from inverse impulse of electrons or ions and from oscillation to thereby restrain consumption and omission of these thermionic emitting materials and to decrease higher harmonics of radiation.

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Patent Owner(s)

Patent OwnerAddress
NEW JAPAN RADIO CO LTD3-10 YOKOYAMA-CHO NIHONBASHI CHUO-KU TOKYO-TO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kishiki, Kiyoshi Kamifukuoka, JP 1 1
Obata, Hideyuki Kamifukuoka, JP 10 9
Torikai, Yukio Kamifukuoka, JP 1 1
Yamashita, Toshihiko Kamifukuoka, JP 17 92

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  • 1 Citation Count
  • H01J Class
  • 4.73 % this patent is cited more than
  • 23 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges486442015927195212701 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7081 - 9091 - 100100 +050100150200250300350400450500550600650700

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