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For the Inventor, By the Inventor

Hitachi-shi, Japan

Yoshitaka Sugawara


USPTO Granted Patents = 2

Forward Citations = 6

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2 inventors (with patents filed for the assignee):

goldMedal Yoshitaka Sugawara (2 out of 24 patents)

silverMedal Nobuyuki Takahashi (1 out of 107 patents)


2 patents:

1. 8786024 - Semiconductor device comprising bipolar and unipolar transistors including a concave and convex portion (2014-07-22),
2. 8748937 - Insulated gate bipolar transistor with high breakdown voltage (2014-06-10),
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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#3 in Hitachi-shi

#10,964 in Japan

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Hitachi-shi, Japan

Yoshitaka Sugawara

Forward Citations = 6

2 inventors:

goldMedal Yoshitaka Sugawara (2 out of 24 patents)

silverMedal Nobuyuki Takahashi (1 out of 107 patents)

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