MI

Masanori Ichikawa

Canon: 20 patents #3,238 of 19,416Top 20%
SC Square Enix Co.: 3 patents #75 of 391Top 20%
NT Ntn: 2 patents #586 of 1,364Top 45%
TC Tokyo Ohka Kogyo Co.: 2 patents #345 of 684Top 55%
NI Nikon: 1 patents #1,647 of 2,493Top 70%
NK Nippon Kogaku K.K.: 1 patents #221 of 382Top 60%
Overall (All Time): #129,340 of 4,157,543Top 4%
29
Patents All Time

Issued Patents All Time

Showing 26–29 of 29 patents

Patent #TitleCo-InventorsDate
6149860 Carburization and quenching apparatus Taichiro Furukawa, Shingo Mizoguchi, Tadayoshi Yoshioka, Yukio Hashimoto 2000-11-21
5667603 Hardening process and apparatus for holed flat parts Tadayoshi Yoshioka, Katsumasa Toyoda, Shinichi Takizawa 1997-09-16
5581410 Resin-coupled optical element and method of production Koji Nakada, Takayuki Akiyama 1996-12-03
4318603 Film rewind device in a camera Koichi Daitoku, Hatsuo Sakamoto, Nobuhiko Terui, Toshiaki Hozumi, Yoshio Sekine +7 more 1982-03-09