Yukihiro Yamaguchi

SE Seiko Epson: 17 patents #1,091 of 7,774Top 15%

Honda Motor Co.: 4 patents #5,328 of 21,052Top 30%

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

HC Hitachi Building Systems Co.: 1 patents #12 of 53Top 25%

FH Fuji Oil Holdings: 1 patents #159 of 368Top 45%

SC Shin-Etsu Handotai Co.: 1 patents #385 of 679Top 60%

TU Tungaloy: 1 patents #62 of 99Top 65%

Overall (All Time): #152,529 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #	Title	Co-Inventors	Date
5077588	Multiple wavelength light emitting device	Masato Yamada, Takuo Takenaka	1991-12-31