Inventor
KATSUYAMA TOMOKAZU
JP15 patents
⚠️ This page may combine multiple inventors who share the name “KATSUYAMA TOMOKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO ELECTRIC INDUSTRIES
14 patentsUS8637337B2Jan 28, 2014
Method for producing integrated optical device
SUMITOMO ELECTRIC INDUSTRIES4 citations71
US7998770B2Aug 16, 2011
Method for forming a semiconductor light-emitting device
SUMITOMO ELECTRIC INDUSTRIES2 citations62
US6791159B2Sep 14, 2004
Optical module
SUMITOMO ELECTRIC INDUSTRIES4 citations62
US11126021B2Sep 21, 2021
Semiconductor optical device and method for manufacturing the same
SUMITOMO ELECTRIC INDUSTRIES0 citations61
US8021985B2Sep 20, 2011
Method to form semiconductor laser diode
SUMITOMO ELECTRIC INDUSTRIES2 citations61
US7816157B2Oct 19, 2010
Method of producing semiconductor optical device
SUMITOMO ELECTRIC INDUSTRIES2 citations61
US7723138B2May 25, 2010
Method of fabricating a semiconductor optical device
SUMITOMO ELECTRIC INDUSTRIES2 citations61
US7678594B2Mar 16, 2010
Integrated optical device and fabrication method thereof
SUMITOMO ELECTRIC INDUSTRIES4 citations61
US7196909B2Mar 27, 2007
AC coupling circuit having a large capacitance and a good frequency response
SUMITOMO ELECTRIC INDUSTRIES3 citations61
US8637338B2Jan 28, 2014
Method for producing integrated optical device
SUMITOMO ELECTRIC INDUSTRIES1 citations51
US7627009B2Dec 1, 2009
Light-emitting device on n-type InP substrate heavily doped with sulfur
SUMITOMO ELECTRIC INDUSTRIES0 citations51
US9235002B2Jan 12, 2016
Integrated semiconductor device
SUMITOMO ELECTRIC INDUSTRIES1 citations50
US8741670B2Jun 3, 2014
Method for producing integrated optical device
SUMITOMO ELECTRIC INDUSTRIES1 citations50
US9341772B2May 17, 2016
Integrated semiconductor device
SUMITOMO ELECTRIC INDUSTRIES0 citations40