Inventor
OHUE EIJI
JP4 patents
Patents
4 patentsUS5962880AOct 5, 1999
Heterojunction bipolar transistor
HITACHI LTD154 citations98
US6482710B2Nov 19, 2002
Bipolar transistor and manufacting method thereof
HITACHI LTD47 citations95
US6521974B1Feb 18, 2003
Bipolar transistor and manufacturing method thereof
HITACHI LTD35 citations92
US6785477B1Aug 31, 2004
Optical receiver using variable negative-capacitance circuit
HITACHI LTD21 citations91