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Yoshiji Kobayashi
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Tokyo, JP
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last 30 patents
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Patent Grant
Bipolar transistor and method of manufacturing the same
Patent number
5,049,964
Issue date
Sep 17, 1991
Nippon Telegraph and Telephone Corp.
Tetsuchi Sakai
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Bipolar transistor and method of manufacturing the same
Patent number
4,780,427
Issue date
Oct 25, 1988
Nippon Telegraph & Telephone Corporation
Tetsushi Sakai
H01 - BASIC ELECTRIC ELEMENTS