TO

Takuji Okamoto

IC Idemitsu Kosan Co.: 20 patents #63 of 1,237Top 6%
Canon: 8 patents #7,260 of 19,416Top 40%
IC Idemitsu Petrochemical Co.: 4 patents #94 of 578Top 20%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
Overall (All Time): #117,401 of 4,157,543Top 3%
31
Patents All Time

Issued Patents All Time

Showing 26–31 of 31 patents

Patent #TitleCo-InventorsDate
5693728 Process for producing cyclic olefin based polymers Junichi Matsumoto, Masami Watanabe, Hiroshi Maezawa 1997-12-02
5668606 Contour restoration apparatus Masanori Hamada, Kenta Sokawa, Kazuya Uyeda, Hideaki Yamauchi 1997-09-16
5648443 Cyclic olefin copolymers, compositions and molded articles comprising the copolymers Junichi Matsumoto, Masami Watanabe, Hiroshi Maezawa 1997-07-15
5629398 Process for producing cyclic olefin based polymers, cyclic olefin copolymers, compositions and molded articles comprising the copolymers Junichi Matsumoto, Masami Watanabe, Hiroshi Maezawa 1997-05-13
5546135 Contour restoration apparatus Masanori Hamada, Kenta Sokawa, Kazuya Uyeda, Hideaki Yamauchi 1996-08-13
5369196 Production process of olefin based polymers Junichi Matsumoto, Masami Watanabe, Nobuhide Ishihara 1994-11-29