Inventor
KAWADA YOICHI
JP29 patents
⚠️ This page may combine multiple inventors who share the name “KAWADA YOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HAMAMATSU PHOTONICS KK
21 patentsUS9612153B2Apr 4, 2017
Electric field vector detection method and electric field vector detection device
HAMAMATSU PHOTONICS KK23 citations94
US10248003B2Apr 2, 2019
Non-linear optical crystal and method for manufacturing same, and terahertz-wave generator and terahertz-wave measuring apparatus
HAMAMATSU PHOTONICS KK2 citations72
US10082720B2Sep 25, 2018
Wavelength conversion element and wavelength conversion light pulse waveform shaping device
HAMAMATSU PHOTONICS KK2 citations72
US8354644B2Jan 15, 2013
Total reflection tera hertz wave measuring apparatus
HAMAMATSU PHOTONICS KK3 citations63
US12560743B2Feb 24, 2026
Optical element for a low frequency band
HAMAMATSU PHOTONICS KK0 citations62
US10908355B2Feb 2, 2021
Wave plate and divided prism member
HAMAMATSU PHOTONICS KK0 citations62
US11320569B2May 3, 2022
Optical element for terahertz waves and manufacturing method of the same
HAMAMATSU PHOTONICS KK1 citations61
US12553811B2Feb 17, 2026
Attenuated total reflectance spectroscopy apparatus, and attenuated total reflectance spectroscopy method
HAMAMATSU PHOTONICS KK0 citations59
US10895504B2Jan 19, 2021
Terahertz wave spectroscopic measurement apparatus and terahertz wave spectroscopic measurement method
HAMAMATSU PHOTONICS KK1 citations57
US10591669B2Mar 17, 2020
Wave plate and divided prism member
HAMAMATSU PHOTONICS KK0 citations52
US12176681B2Dec 24, 2024
Optical kit and optical device
HAMAMATSU PHOTONICS KK0 citations51
US12345852B2Jul 1, 2025
Optical element
HAMAMATSU PHOTONICS KK0 citations50
US10809189B2Oct 20, 2020
Optical measurement device and optical measurement method
HAMAMATSU PHOTONICS KK0 citations50
US9157851B2Oct 13, 2015
Drug evaluation method and drug evaluation device
HAMAMATSU PHOTONICS KK0 citations48
US12492990B2Dec 9, 2025
Spectroscopic measurement device
HAMAMATSU PHOTONICS KK0 citations45
US10670520B2Jun 2, 2020
Optical analysis device and optical analysis method
HAMAMATSU PHOTONICS KK0 citations41
US10048129B2Aug 14, 2018
Total reflection spectroscopic measurement device and total reflection spectroscopic measurement method
HAMAMATSU PHOTONICS KK0 citations41
US9927298B2Mar 27, 2018
Spectroscopic measurement apparatus
HAMAMATSU PHOTONICS KK0 citations41
US9417182B2Aug 16, 2016
Prism member, terahertz-wave spectroscopic measurement device, and terahertz-wave spectroscopic measurement method
HAMAMATSU PHOTONICS KK0 citations40
US10591509B2Mar 17, 2020
Tunnel current control apparatus and tunnel current control method
HAMAMATSU PHOTONICS KK0 citations34
US10451651B2Oct 22, 2019
Tunnel current control apparatus and tunnel current control method
HAMAMATSU PHOTONICS KK0 citations34