Inventor
ITABASHI NAOKI
JP19 patents
Patents
19 patentsUS10608599B2Mar 31, 2020
Variable gain circuit and transimpedance amplifier using the same
SUMITOMO ELECTRIC INDUSTRIES10 citations83
US9046703B2Jun 2, 2015
Optical modulator module and semiconductor optical modulator
SUMITOMO ELECTRIC INDUSTRIES9 citations83
US11595010B2Feb 28, 2023
Optical receiver and transimpedance amplifier circuit
SUMITOMO ELECTRIC INDUSTRIES2 citations72
US11362629B2Jun 14, 2022
Transimpedance amplifier circuit
SUMITOMO ELECTRIC INDUSTRIES2 citations72
US12327979B2Jun 10, 2025
Optical semiconductor module
SUMITOMO ELECTRIC INDUSTRIES0 citations61
US9030257B2May 12, 2015
Differential circuit compensated with self-heating effect of active device
SUMITOMO ELECTRIC INDUSTRIES1 citations52
US11437962B2Sep 6, 2022
Differential amplifier circuit having variable gain
SUMITOMO ELECTRIC INDUSTRIES0 citations51
US9698023B2Jul 4, 2017
Traveling-wave amplifier
SUMITOMO ELECTRIC INDUSTRIES1 citations51
US9608581B2Mar 28, 2017
Differential amplifier
SUMITOMO ELECTRIC INDUSTRIES1 citations51
US8957709B2Feb 17, 2015
Driver circuit powered by two power supplies sequentially activated
SUMITOMO ELECTRIC INDUSTRIES1 citations51
US12322925B2Jun 3, 2025
Optical semiconductor module
SUMITOMO ELECTRIC INDUSTRIES0 citations50
US11799267B2Oct 24, 2023
Optical module and manufacturing method of the same
SUMITOMO ELECTRIC INDUSTRIES0 citations47
US10574027B2Feb 25, 2020
Laser driver circuit and optical transmitter using the same
SUMITOMO ELECTRIC INDUSTRIES0 citations41
US9825602B2Nov 21, 2017
Amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations41
US9419574B2Aug 16, 2016
Amplifier circuit
SUMITOMO ELECTRIC INDUSTRIES0 citations41
US9246440B2Jan 26, 2016
Differential amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations41
US10644653B2May 5, 2020
Amplifier and optical transmitter using the same
SUMITOMO ELECTRIC INDUSTRIES0 citations40
US10396719B2Aug 27, 2019
Integrated circuit device
SUMITOMO ELECTRIC INDUSTRIES0 citations40
US10263583B2Apr 16, 2019
Variable gain amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations40