HK

Hiroyuki Katayama

Sharp Kabushiki Kaisha: 110 patents #31 of 10,731Top 1%
ND Nitto Denko: 35 patents #37 of 2,479Top 2%
NS Nippon Steel: 5 patents #528 of 4,423Top 15%
YA Yazaki: 5 patents #867 of 3,427Top 30%
TO Toyota: 4 patents #6,703 of 26,838Top 25%
Fujitsu Limited: 4 patents #7,093 of 24,456Top 30%
JT Jtekt: 4 patents #427 of 1,969Top 25%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
SC Sekisui Chemical Co.: 3 patents #246 of 908Top 30%
DE Denso: 3 patents #3,857 of 11,792Top 35%
JC Japan Metals & Chemicals Co.: 2 patents #15 of 152Top 10%
UN Unknown: 2 patents #12,644 of 83,584Top 20%
MI Mitsui Toatsu Chemicals, Incorporated: 2 patents #607 of 1,543Top 40%
AT Agency Of Industrial Science And Technology: 2 patents #293 of 1,778Top 20%
MS Mitsubishi Hitachi Power Systems: 1 patents #495 of 970Top 55%
SI Sumitomo Rubber Industries: 1 patents #1,096 of 1,637Top 70%
UI Ube Industries: 1 patents #895 of 1,686Top 55%
EI Eisai: 1 patents #611 of 998Top 65%
Ford: 1 patents #9,341 of 17,473Top 55%
SO Sony: 1 patents #17,262 of 25,231Top 70%
EC Eisai R&D Management Co.: 1 patents #478 of 817Top 60%
MC Mitsui Chemicals: 1 patents #1,270 of 2,279Top 60%
JA Japan Science And Technology Agency: 1 patents #756 of 2,171Top 35%
RI Riken: 1 patents #679 of 1,824Top 40%
SH Shap: 1 patents #2 of 6Top 35%
Overall (All Time): #4,128 of 4,157,543Top 1%
182
Patents All Time

Issued Patents All Time

Showing 176–182 of 182 patents

Patent #TitleCo-InventorsDate
4695514 Magneto-optical memory element Akira Takahashi, Yoshiteru Murakami, Junji Hirokane, Kenji Ohta 1987-09-22
4662937 Process for production of high-manganese iron alloy by smelting reduction Hidetake Ishikawa, Masatoshi Kuwabara, Hiroyuki Kajioka, Masaki Fujita, Kenji Shibata +2 more 1987-05-05
4610912 Magneto-optic memory element Akira Takahashi, Yoshiteru Murakami, Junji Hirokane, Kenji Ohta, Hideyoshi Yamaoka 1986-09-09
4565574 Process for production of high-chromium alloy by smelting reduction Hidetake Ishikawa, Masatoshi Kuwabara, Chikara Saito, Tuneyuki Inoue, Masaki Fujita 1986-01-21
4544443 Method for manufacturing an optical memory element Kenji Ohta, Junji Hirokane, Akira Takahashi, Hideyoshi Yamaoka 1985-10-01
4410360 Process for producing high chromium steel Hidetake Ishikawa, Chikara Saito, Hirofumi Wakimoto 1983-10-18
4198229 Method of dephosphorization of metal or alloy Makoto Inatomi, Hiroyuki Kajioka, Yasushi Nakamura, Michihisa Ito, Kazuumi Harashima +1 more 1980-04-15