Yukio Okamoto

HI Hitachi: 21 patents #1,645 of 28,497Top 6%

KO Konica: 10 patents #212 of 1,958Top 15%

KC Konishiroku Photo Industry Co.: 9 patents #85 of 894Top 10%

Sumitomo Electric Industries: 4 patents #6,367 of 21,551Top 30%

KM Konica Minolta: 2 patents #764 of 1,361Top 60%

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

JS Japan Ae Power Systems: 1 patents #17 of 57Top 30%

SK Showa Denko K.K.: 1 patents #940 of 1,736Top 55%

HC Hitachi Instruments Engineering Co.: 1 patents #18 of 126Top 15%

PA Panasonic: 1 patents #13,264 of 21,108Top 65%

HP HP: 1 patents #3,612 of 7,018Top 55%

Overall (All Time): #52,821 of 4,157,543Top 2%

Patents All Time

Issued Patents All Time

Showing 51–51 of 51 patents

Patent #	Title	Co-Inventors	Date
4333040	Gas discharge display device	Eisuke Mitani, Tadao Okabe, Atsushi Sumioka	1982-06-01