RF

Ryoji Fujiwara

Canon: 27 patents #2,142 of 19,416Top 15%
DE Denso: 1 patents #6,940 of 11,792Top 60%
JC Johnan Seisakusho Co.: 1 patents #4 of 17Top 25%
KC Kanegafuchi Chemical Industry Co.: 1 patents #86 of 179Top 50%
Nissan Motor Co.: 1 patents #4,519 of 8,689Top 55%
Overall (All Time): #123,898 of 4,157,543Top 3%
30
Patents All Time

Issued Patents All Time

Showing 26–30 of 30 patents

Patent #TitleCo-InventorsDate
4892594 Photovoltaic element Minori Yamaguchi, Isamu Shimizu 1990-01-09
4850681 Optical modulation device Masao Yamanobe, Yasuyuki Watanabe, Hajime Sakata, Yukitoshi Ohkubo, Tomoyuki Umezawa +5 more 1989-07-25
4670334 Transparent electroconductive film Isamu Shimizu 1987-06-02
4605285 Electrochromic device Isamu Shimizu 1986-08-12
4438972 Operating mechanism for operating a sliding and tilting roof-panel Yoshinori Katayama, Tsunetoshi Nishimaki 1984-03-27