Tatsuo Harada

HI Hitachi: 12 patents #3,472 of 28,497Top 15%

Mitsubishi Electric: 7 patents #4,301 of 25,717Top 20%

NC Nihon Nohyaku Co.: 3 patents #68 of 243Top 30%

MC Matsumoto Yushi-Seiyaku Co.: 2 patents #22 of 113Top 20%

AK Araco Kabushiki Kaisha: 1 patents #30 of 107Top 30%

KT Kabushiki Kaisha Toshiba: 1 patents #13,537 of 21,451Top 65%

Overall (All Time): #153,133 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #	Title	Co-Inventors	Date
4219933	Diffraction grating ruling engine	Toshiaki Kita, Shigeo Moriyama	1980-09-02