Shigehisa Aoyagi

HS Hitachi Automotive Systems: 12 patents #102 of 1,636Top 7%

HA Hitachi Astemo: 6 patents #91 of 1,276Top 8%

HI Hitachi: 5 patents #7,555 of 28,497Top 30%

HC Hitachi Car Engineering Co.: 5 patents #83 of 465Top 20%

HC Hitachi Industrial Equipment Systems Co.: 3 patents #164 of 550Top 30%

Overall (All Time): #152,742 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #	Title	Co-Inventors	Date
7332882	Motor drive device that combined charge controller	Tsunehiro Endo, Hidefumi Shirahama, Yoshiki Ito	2008-02-19