Inventor
ISHIKAWA EIJI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “ISHIKAWA EIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DENSO CORP
6 patentsUS6521538B2Feb 18, 2003
Method of forming a trench with a rounded bottom in a semiconductor device
DENSO CORP127 citations97
US6090718AJul 18, 2000
Dry etching method for semiconductor substrate
DENSO CORP96 citations97
US6797588B2Sep 28, 2004
Method for manufacturing a semiconductor device having a trench and a thick insulation film at the trench opening
DENSO CORP23 citations92
US6482701B1Nov 19, 2002
Integrated gate bipolar transistor and method of manufacturing the same
DENSO CORP47 citations92
US7541257B2Jun 2, 2009
Semiconductor device having three-dimensional construction and method for manufacturing the same
DENSO CORP2 citations63
US7642194B2Jan 5, 2010
Method for etching and apparatus for etching
DENSO CORP0 citations51
FUJITSU LTD
6 patentsUS7684713B2Mar 23, 2010
Phase control apparatus and optical DQPSK receiver
FUJITSU LTD9 citations82
US7251072B2Jul 31, 2007
Optical transmission system
FUJITSU LTD13 citations82
US9407396B2Aug 2, 2016
Wavelength multiplexing apparatus and method
FUJITSU LTD4 citations73
US7312918B2Dec 25, 2007
Optical transmission system having function of correcting noise light due to Raman amplification
FUJITSU LTD7 citations73
US7586672B2Sep 8, 2009
Optical transmission system
FUJITSU LTD2 citations61
US10637564B2Apr 28, 2020
Transmission apparatus, transmission system, and transmission method
FUJITSU LTD0 citations42