Inventor
MURAYAMA KEIICHI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “MURAYAMA KEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
9 patentsUS6677625B2Jan 13, 2004
Bipolar transistor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74
US7001820B1Feb 21, 2006
Heterojunction bipolar transistor and method for fabricating the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations73
US6903388B2Jun 7, 2005
Hetero-junction bipolar transistor and manufacturing method thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations73
US7012337B2Mar 14, 2006
Semiconductor device including a photosensitive resin covering at least a portion of a substrate having a via hole
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations70
US6982141B2Jan 3, 2006
Semiconductor device and manufacturing method thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations70
US7091528B2Aug 15, 2006
Semiconductor device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations62
US7176098B2Feb 13, 2007
Semiconductor element and method for fabricating the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations56
US7301181B2Nov 27, 2007
Heterojunction bipolar transistor having an emitter layer made of a semiconductor material including aluminum
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations52
US7176099B2Feb 13, 2007
Hetero-junction bipolar transistor and manufacturing method thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations51
PANASONIC CORP
5 patentsUS7989845B2Aug 2, 2011
Semiconductor device having a hetero-junction bipolar transistor and manufacturing method thereof
PANASONIC CORP9 citations83
US7728357B2Jun 1, 2010
Heterojunction bipolar transistor and manufacturing method thereof
PANASONIC CORP19 citations83
US8017975B2Sep 13, 2011
Semiconductor device
PANASONIC CORP2 citations62
US7566920B2Jul 28, 2009
Bipolar transistor and power amplifier
PANASONIC CORP5 citations62
US7449729B2Nov 11, 2008
Heterojunction bipolar transistor and method for fabricating the same
PANASONIC CORP2 citations62