Inventor
NAKAMURA ATSUHIKO
JP10 patents
⚠️ This page may combine multiple inventors who share the name “NAKAMURA ATSUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
5 patentsUS12061236B2Aug 13, 2024
Power conversion device, rotating machine system, and diagnosis method
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations61
US11870384B2Jan 9, 2024
Speed calculation device and power conversion device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations61
US11575338B2Feb 7, 2023
Power conversion device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations60
US11437944B2Sep 6, 2022
Power conversion device
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations60
US11424707B2Aug 23, 2022
Power conversion apparatus
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations60
HITACHI LTD
3 patentsUS5175483ADec 29, 1992
Method and an apparatus for computing moment of inertia in a motor speed controller, and a speed control method and apparatus for a motor
HITACHI LTD27 citations91
US7920395B2Apr 5, 2011
Pulse width modulation method for a power converter
HITACHI LTD3 citations61
US7433403B2Oct 7, 2008
Pulse width modulation method for a power converter
HITACHI LTD2 citations61
SEGA ENTERPRISES KK
2 patentsUS6007423ADec 28, 1999
Virtual course display method and game machine using the same
SEGA ENTERPRISES KK24 citations90
US5816913AOct 6, 1998
Method and apparatus for measuring virtual time difference or virtual distance between mobile bodies, and storage medium storing programs for causing a computer to execute the method
SEGA ENTERPRISES KK39 citations90