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Kuniyoshi Yokoo
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Sendai, JP
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last 30 patents
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Patent Grant
Field emission cathode and electromagnetic wave generating apparatu...
Patent number
6,326,729
Issue date
Dec 4, 2001
Tohoku University
Kuniyoshi Yokoo
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Auto-resonant peniotron having amplifying waveguide section
Patent number
4,988,956
Issue date
Jan 29, 1991
Kabushiki Kaisha Toshiba
Shoichi Ono
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Ion pump for producing an ultrahigh degree of vacuum
Patent number
4,389,165
Issue date
Jun 21, 1983
Tohoku University
Shoichi Ono
H01 - BASIC ELECTRIC ELEMENTS