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Takashi Yorifuji
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Zushi, JP
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last 30 patents
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Patent Grant
Low-pressure mercury vapor discharge lamp having a folded tube
Patent number
5,055,738
Issue date
Oct 8, 1991
Toshiba Lighting & Technology Corporation
Takashi Yorifuji
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Amalgam having extended stable mercury vapor pressure range and low...
Patent number
4,972,118
Issue date
Nov 20, 1990
Kabushiki Kaisha Toshiba
Takashi Yorifuji
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of manufacturing a low-melting point alloy for sealing in a...
Patent number
4,615,846
Issue date
Oct 7, 1986
Kabushiki Kaisha Toshiba
Hisashi Yoshino
B22 - CASTING POWDER METALLURGY