Akio Koyama

TO Toyota: 16 patents #1,599 of 26,838Top 6%

NC Nihon Kogyo Co.: 2 patents #4 of 29Top 15%

HI Hitachi: 2 patents #13,388 of 28,497Top 50%

RT Renesas Technology: 1 patents #1,991 of 3,337Top 60%

RI Riken: 1 patents #679 of 1,824Top 40%

SC Shin-Etsu Chemical Co.: 1 patents #1,340 of 2,176Top 65%

Tdk: 1 patents #2,493 of 3,796Top 70%

TO Toshiba: 1 patents #1,121 of 2,688Top 45%

JE Japan Energy: 1 patents #85 of 240Top 40%

Overall (All Time): #155,369 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #	Title	Co-Inventors	Date
4414424	Gas-insulated bus bar	Tetsuhiko Mizoguchi	1983-11-08