MI

Masaaki Ishikawa

Ricoh Company: 29 patents #656 of 9,818Top 7%
KC Koito Manufacturing Co.: 11 patents #108 of 1,047Top 15%
KT Kabushiki Kaisha Toshiba: 6 patents #4,898 of 21,451Top 25%
TC Tamapak Co.: 3 patents #2 of 2Top 100%
TO Toshiba: 3 patents #380 of 2,688Top 15%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
Sharp Kabushiki Kaisha: 2 patents #5,184 of 10,731Top 50%
KS Kawasaki Steel: 2 patents #570 of 1,922Top 30%
SC Sumitomo Osaka Cement Co.: 2 patents #133 of 327Top 45%
IBM: 1 patents #44,794 of 70,183Top 65%
MC Mitutoyo Mfg. Co.: 1 patents #56 of 118Top 50%
SC Shindengen Electric Manufacturing Co.: 1 patents #159 of 307Top 55%
TC Tfk Co.: 1 patents #3 of 8Top 40%
YC Yamanashi Electronics Co.: 1 patents #18 of 75Top 25%
Overall (All Time): #37,949 of 4,157,543Top 1%
61
Patents All Time

Issued Patents All Time

Showing 51–61 of 61 patents

Patent #TitleCo-InventorsDate
5038202 Image transmission system Tsutomu Ooishi, Yasunori Ishikawa, Noboru Murayama, Koichi Suzuki, Koji Kuwata +1 more 1991-08-06
4953196 Image transmission system Yasunori Ishikawa, Noboru Murayama, Koichi Suzuki, Koji Kuwata, Hiroshi Shimura 1990-08-28
RE33006 Feed-water heater comprising low C-Cr-Mo steel components used under wet steam Fumio Hataya, Masakiyo Izumiya, Yoshikuni Ohshima, Koichi Akutsu, Syuzo Ueda +2 more 1989-08-01
4851926 Electrophotographic recording apparatus for a facsimile device 1989-07-25
4667244 Paper feeding apparatus 1987-05-19
4586705 Automatic paper feeding device for a facsimile equipment or the like apparatus Jinichi Satoh, Hideya Ino, Michihisa Iguchi 1986-05-06
4529454 Low C-Cr-Mo steel used under wet steam Fumio Hataya, Masakiyo Izumiya, Yoshikuni Ohshima, Koichi Akutsu, Syuzo Ueda +2 more 1985-07-16
4457507 Sheet feeding apparatus Michihisa Iguchi 1984-07-03
4447959 Instrument for measuring internal dimensions Teruo Watanabe 1984-05-15
4400225 Cr-Mo Steel for use as very thick plates of 75 mm or more for oil refinery, coal liquefaction and coal gasification equipment Syuzo Ueda, Makoto Imanaka 1983-08-23
4345277 Linear light source fixing device used in a facsimile transmission apparatus 1982-08-17