Inventor
KIYOTOKI YOSHIHISA
JP14 patents
⚠️ This page may combine multiple inventors who share the name “KIYOTOKI YOSHIHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS6959916B2Nov 1, 2005
Valve and manufacturing method thereof
HITACHI LTD34 citations90
US6672330B2Jan 6, 2004
Valve bonded with corrosion and wear proof alloy and apparatuses using said valve
HITACHI LTD15 citations83
US7584668B2Sep 8, 2009
Monitoring system for valve device
HITACHI LTD4 citations62
US6896978B2May 24, 2005
Joint construction of cobalt-based alloy
HITACHI LTD2 citations61
US6889957B2May 10, 2005
Joint construction of cobalt-based alloy
HITACHI LTD1 citations61
US6886809B2May 3, 2005
Joint construction of cobalt-based alloy
HITACHI LTD4 citations61
US5156197AOct 20, 1992
Float type liquid level meter
HITACHI LTD4 citations61
HITACHI GE NUCLEAR ENERGY LTD
6 patentsUS10260651B2Apr 16, 2019
Butterfly valve formed of a laminated material
HITACHI GE NUCLEAR ENERGY LTD6 citations65
US11946554B2Apr 2, 2024
Fluid contact member and method of manufacturing fluid contact member
HITACHI GE NUCLEAR ENERGY LTD0 citations58
US12502727B2Dec 23, 2025
Corrosion and wear resistant overlay, method for forming corrosion and wear resistant overlay, and corrosion and wear resistant valve
HITACHI GE NUCLEAR ENERGY LTD0 citations48
US10872704B2Dec 22, 2020
Water injection device
HITACHI GE NUCLEAR ENERGY LTD0 citations48
US9916908B2Mar 13, 2018
Gas supply apparatus and air or nitrogen supply apparatus of nuclear plant
HITACHI GE NUCLEAR ENERGY LTD0 citations41
US11684976B2Jun 27, 2023
Method of manufacturing transition piece and transition piece
HITACHI GE NUCLEAR ENERGY LTD0 citations40