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Masahiko Koizumi
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Shizuoka, JP
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last 30 patents
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Patent Grant
Welding method using heating plate and welding apparatus using the...
Patent number
6,425,431
Issue date
Jul 30, 2002
Koito Manufacturing Co., Ltd.
Toshitaka Naito
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Vibration welding apparatus having an easy to assemble jig structure
Patent number
6,280,566
Issue date
Aug 28, 2001
Koito Manufacturing Co., Ltd.
Toshitaka Naito
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL