RT

Ryoichi Takasu

TC Tokyo Ohka Kogyo Co.: 10 patents #121 of 684Top 20%
Overall (All Time): #518,237 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
8198004 Resist composition Taku Hirayama, Hideo Hada, Satoshi Fujimura, Takeshi Iwai, Mitsuru Sato +6 more 2012-06-12
7989138 Fluorine-containing compound, resist composition for immersion exposure, and method of forming resist pattern Sanae Furuya, Takahiro Dazai, Takayoshi Mori, Tomoyuki Hirano 2011-08-02
7914967 Fluorine-containing compound, resist composition for immersion exposure, and method of forming resist pattern Sanae Furuya, Takayoshi Mori, Takahiro Dazai, Tomoyuki Hirano 2011-03-29
7914968 Positive resist composition and method of forming resist pattern Takeyoshi Mimura, Akiya Kawaue 2011-03-29
7541138 Resist composition Taku Hirayama, Hideo Hada, Satoshi Fujimura, Takeshi Iwai, Mitsuru Sato +6 more 2009-06-02
7527909 Resist composition Taku Hirayama, Hideo Hada, Satoshi Fujimura, Takeshi Iwai, Mitsuru Sato +6 more 2009-05-05
7501220 Resist composition Taku Hirayama, Hideo Hada, Satoshi Fujimura, Takeshi Iwai, Mitsuru Sato +6 more 2009-03-10
7371510 Material for forming resist protecting film for use in liquid immersion lithography process, composite film, and method for forming resist pattern Taku Hirayama, Mitsuru Sato, Kazumasa Wakiya, Masaaki Yoshida, Koki Tamura 2008-05-13
7326512 Polymer compound, resist composition and dissolution inhibitor agent containing the polymer compound Toshiyuki Ogata, Kotaro Endo, Hiromitsu Tsuji, Masaaki Yoshida, Hideo Hada +1 more 2008-02-05
6936400 Negative resist composition Miwa Miyairi, Jun Iwashita, Toshikazu Tachikawa 2005-08-30