Inventor
HARA TOKUTAKA
JP19 patents
⚠️ This page may combine multiple inventors who share the name “HARA TOKUTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO OSAKA CEMENT CO LTD
18 patentsUS7200289B2Apr 3, 2007
Optical waveguide modulator with output light monitor
SUMITOMO OSAKA CEMENT CO LTD16 citations92
US7532778B2May 12, 2009
Optical waveguide modulator equipped with an output light monitor
SUMITOMO OSAKA CEMENT CO LTD8 citations84
US7359581B2Apr 15, 2008
Optical waveguide modulator with output light monitor
SUMITOMO OSAKA CEMENT CO LTD13 citations84
US7310453B2Dec 18, 2007
Optical modulator
SUMITOMO OSAKA CEMENT CO LTD18 citations83
US9570879B2Feb 14, 2017
Optical pulse-generator and optical pulse-generating method
SUMITOMO OSAKA CEMENT CO LTD3 citations72
US9366937B2Jun 14, 2016
Optical pulse-generator
SUMITOMO OSAKA CEMENT CO LTD4 citations71
US9703169B2Jul 11, 2017
Optical modulator
SUMITOMO OSAKA CEMENT CO LTD3 citations68
US11204507B2Dec 21, 2021
Positioning member having cutout portion and polarization beam combining module using positioning member
SUMITOMO OSAKA CEMENT CO LTD1 citations62
US11163118B2Nov 2, 2021
Optical modulation device
SUMITOMO OSAKA CEMENT CO LTD0 citations52
US9864216B2Jan 9, 2018
Optical modulator
SUMITOMO OSAKA CEMENT CO LTD1 citations52
US9817293B2Nov 14, 2017
Optical modulator
SUMITOMO OSAKA CEMENT CO LTD1 citations52
US11022763B2Jun 1, 2021
Optical module
SUMITOMO OSAKA CEMENT CO LTD0 citations51
US10126505B2Nov 13, 2018
Optical element module
SUMITOMO OSAKA CEMENT CO LTD0 citations51
US7760775B2Jul 20, 2010
Apparatus and method of generating laser beam
SUMITOMO OSAKA CEMENT CO LTD1 citations46
US7936803B2May 3, 2011
External cavity semiconductor laser
SUMITOMO OSAKA CEMENT CO LTD1 citations45
US10409136B2Sep 10, 2019
Optical modulator
SUMITOMO OSAKA CEMENT CO LTD0 citations41
US10001602B2Jun 19, 2018
Polarization-combining module
SUMITOMO OSAKA CEMENT CO LTD0 citations41
US9618713B2Apr 11, 2017
Optical element
SUMITOMO OSAKA CEMENT CO LTD0 citations37