Keiji TSUDA

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Hyogo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Phototransistor and semiconductor device
- Patent number 9,472,584
- Issue date Oct 18, 2016
- Ricoh Company, Ltd.
- Takaaki Negoro
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
PHOTOTRANSISTOR AND SEMICONDUCTOR DEVICE
- Publication number 20150214413
- Publication date Jul 30, 2015
- RICOH COMPANY, LTD.
- Takaaki NEGORO
- H01 - BASIC ELECTRIC ELEMENTS