Inventor
NAGURA OSAMU
JP12 patents
⚠️ This page may combine multiple inventors who share the name “NAGURA OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS5886417AMar 23, 1999
Electrical power generating installation and method of operating same
HITACHI LTD30 citations92
US4952852AAug 28, 1990
Power system and synchronizing breakers for a variable speed generator motor system
HITACHI LTD48 citations91
US4812730AMar 14, 1989
Variable-speed generator/motor system
HITACHI LTD28 citations89
US4870339ASep 26, 1989
Variable-speed power generating system
HITACHI LTD22 citations80
US4652807AMar 24, 1987
Starting method for induction motors
HITACHI LTD9 citations73
US4980629ADec 25, 1990
AC-excited generator/motor apparatus
HITACHI LTD13 citations70
US4926541AMay 22, 1990
Method of assembling wound rotor of vertical type adjustable speed hydroelectric rotating machine at its installation site
HITACHI LTD10 citations70
NIPPON OILS & FATS CO LTD
3 patentsUS4136068AJan 23, 1979
Cellulose ester graft polymer/acrylic co-polymer/amino resin water dispersible coating composition
NIPPON OILS & FATS CO LTD15 citations72
US4839406AJun 13, 1989
Fluidity controlling agent for paints
NIPPON OILS & FATS CO LTD17 citations69
US4883858ANov 28, 1989
Thermosetting resin from amine terminated amic acid and bis-maleimide
NIPPON OILS & FATS CO LTD2 citations61
HITACHI MITSUBISHI HYDRO CORPORATION
2 patentsUS10536104B2Jan 14, 2020
Variable speed generator-motor apparatus and variable speed generator-motor system
HITACHI MITSUBISHI HYDRO CORPORATION14 citations85
US10784808B2Sep 22, 2020
Variable speed generator-motor apparatus and variable speed generator-motor system
HITACHI MITSUBISHI HYDRO CORPORATION7 citations83