Inventor
TOHYAMA MASAKI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “TOHYAMA MASAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
11 patentsUS5642371AJun 24, 1997
Optical transmission apparatus
TOSHIBA KK133 citations98
US5970081AOct 19, 1999
Grating coupled surface emitting device
TOSHIBA KK72 citations95
US5901265AMay 4, 1999
Optical semiconductor device and method of fabricating the same
TOSHIBA KK34 citations92
US5889913AMar 30, 1999
Optical semiconductor device and method of fabricating the same
TOSHIBA KK20 citations92
US5604762AFeb 18, 1997
Semiconductor optical device
TOSHIBA KK21 citations92
US5347526ASep 13, 1994
Wavelength-tunable semiconductor laser
TOSHIBA KK36 citations92
US6108481AAug 22, 2000
Optical semiconductor device and its manufacturing method
TOSHIBA KK27 citations91
US9431793B2Aug 30, 2016
Semiconductor laser device
TOSHIBA KK4 citations73
US6865204B2Mar 8, 2005
Ridge waveguide type photo semiconductor device and method for fabricating same
TOSHIBA KK8 citations72
US8348468B2Jan 8, 2013
Light emitting device
TOSHIBA KK3 citations63
US7139450B2Nov 21, 2006
Laser transmitter device
TOSHIBA KK5 citations56