Inventor
NAGATA HIROTOSHI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “NAGATA HIROTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO OSAKA CEMENT CO LTD
7 patentsUS6956980B2Oct 18, 2005
Optical waveguide type optical modulator and production method therefor
SUMITOMO OSAKA CEMENT CO LTD30 citations91
US5727105AMar 10, 1998
Package structure for optical element and fibers and composite structure thereof
SUMITOMO OSAKA CEMENT CO LTD27 citations89
US6134372AOct 17, 2000
Light intensity attenuator and attenuating method
SUMITOMO OSAKA CEMENT CO LTD15 citations72
US5613026AMar 18, 1997
Package structure for optical element and fibers and composite structure thereof
SUMITOMO OSAKA CEMENT CO LTD14 citations68
US6806113B2Oct 19, 2004
Optical waveguide device and method for forming optical waveguide device
SUMITOMO OSAKA CEMENT CO LTD2 citations61
US6583480B1Jun 24, 2003
Electro-optical element having protective film on top and side surfaces of buffer layer
SUMITOMO OSAKA CEMENT CO LTD4 citations61
US6980705B2Dec 27, 2005
Optical waveguide device
SUMITOMO OSAKA CEMENT CO LTD0 citations51