Inventor
YANAGISAWA KOICHI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “YANAGISAWA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HIOKI ELECTRIC WORKS
10 patentsUS9201100B2Dec 1, 2015
Voltage detecting apparatus and line voltage detecting apparatus
HIOKI ELECTRIC WORKS21 citations92
US7466145B2Dec 16, 2008
Voltage measuring apparatus and power measuring apparatus
HIOKI ELECTRIC WORKS30 citations92
US7834645B2Nov 16, 2010
Variable capacitance circuit, voltage measuring apparatus, and power measuring apparatus
HIOKI ELECTRIC WORKS9 citations83
US11522530B2Dec 6, 2022
Waveform shaping circuit, signal generation apparatus, and signal reading system
HIOKI ELECTRIC WORKS0 citations58
US11349464B2May 31, 2022
Waveform shaping circuit, signal generation apparatus, and signal reading system
HIOKI ELECTRIC WORKS0 citations58
US7148768B2Dec 12, 2006
Filter element
HIOKI ELECTRIC WORKS4 citations58
US7454725B2Nov 18, 2008
Apparatus and computer readable medium having program for analyzing distributed constant in a transmission line
HIOKI ELECTRIC WORKS2 citations49
US7355493B2Apr 8, 2008
Filter element
HIOKI ELECTRIC WORKS0 citations48
US12535531B2Jan 27, 2026
Impedance measurement device
HIOKI ELECTRIC WORKS0 citations44
US10012677B2Jul 3, 2018
Voltage detecting apparatus
HIOKI ELECTRIC WORKS0 citations41
DORYOKURO KAKUNENRYO
3 patentsUS5767400AJun 16, 1998
Hydraulic test system mounted with borehole television set for simultaneous observation in front and lateral directions
DORYOKURO KAKUNENRYO38 citations91
US5896926AApr 27, 1999
Packer type groundwater sampling system and water sampling method
DORYOKURO KAKUNENRYO25 citations87
US4986120AJan 22, 1991
Low-water-pressure controlled hydrologic test method
DORYOKURO KAKUNENRYO8 citations73