Keiichi Sugiyama

Yamaha Motor: 14 patents #65 of 2,310Top 3%

NC Nippon Light Metal Company: 4 patents #52 of 499Top 15%

WC Wacom Co.: 3 patents #157 of 357Top 45%

YA Yazaki: 3 patents #1,239 of 3,427Top 40%

AC Amada Co.: 2 patents #134 of 479Top 30%

SE Sega Enterprises: 1 patents #101 of 368Top 30%

Honda Motor Co.: 1 patents #12,035 of 21,052Top 60%

SC Soltech Co.: 1 patents #4 of 9Top 45%

AC Actronics Co.: 1 patents #3 of 9Top 35%

Overall (All Time): #145,250 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #	Title	Co-Inventors	Date
4231339	Control device for exhaust gas recycled internal combustion engine	Hiromitsu Matsumoto	1980-11-04
4194477	Device for admission of secondary air to internal combustion engine intake	—	1980-03-25