KY

Katsumasa Yamamoto

SC Sumitomo Seika Chemicals Co.: 11 patents #14 of 365Top 4%
TK Toyo Boseki Kabushiki Kaisha: 5 patents #122 of 1,085Top 15%
TC Toyo Boseki Kabushiki Kaisha T/A Toyobo Co.: 1 patents #1 of 21Top 5%
📍 Kasai, JP: #485 of 5,842 inventorsTop 9%
Overall (All Time): #269,938 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
11603466 Epoxy resin composition Noriaki Fukuda, Ryota HARISAKI 2023-03-14
11292872 Epoxy resin composition Ryota HARISAKI, Noriaki Fukuda 2022-04-05
11111382 Epoxy resin composition Noriaki Fukuda, Ryota HARISAKI 2021-09-07
11091627 Epoxy resin composition Noriaki Fukuda, Ryota HARISAKI 2021-08-17
11066510 Epoxy resin composition, process for producing same, and uses of said composition Noriaki Fukuda, Ryota HARISAKI, Nobukatsu Nemoto 2021-07-20
9963552 Condensation-curable silicone resin composition, condensation-curable silicone resin cured product, and sealed optical semiconductor element Noriaki Fukuda 2018-05-08
9783717 Addition-curable silicone resin composition, addition-curable silicone resin cured product, and sealed optical semiconductor element Noriaki Fukuda, Shohei Sanada 2017-10-10
9181400 Silicone resin composition, cured silicone resin, and sealed optical semiconductor element Noriaki Fukuda, Shohei Sanada 2015-11-10
8540904 Composition for ultraviolet absorbent substance and ultraviolet absorbent substance comprising same Yusaku Masuhara, Hidehiko Myoken 2013-09-24
8216768 Photoacid generator and photoreactive composition Hirofumi Yamaguchi, Michio Suzuki 2012-07-10
6348300 Process for treating periphery of unexposed photosensitive resin plate Takamitsu Ariki, Kosaku Onodera, Masaru Nampei 2002-02-19
6150076 Process for treating periphery of unexposed photosensitive resin plate Takamitsu Ariki, Kosaku Onodera, Masaru Nampei 2000-11-21
5834621 Novel sulfur-containing compound and method for preparing the same Masahito Nakano, Michio Suzuki 1998-11-10
5145946 Process for preparing polyarylene sulfide with alkali metal salt of phenolic aromatic carboxylic acid Tsuguo Fujii, Junji Uda 1992-09-08
5124736 Process and apparatus for developing photopolymer plates Kyoichi Mizuno, Kosaku Onodera, Keizo Kawahara, Masaru Nanpei 1992-06-23
4957980 Polyester resin composition and hollow molded article thereof Shigeo Kobayashi, Toshio Hiramatsu, Nobuhiko Ichikawa 1990-09-18
4663431 Process for preparing polyarylene sulfide with alkali metal salt of phenolic aromatic sulfonic acid Tsuguo Fujii, Tetsuo Aratani, Yoshinori Uegaki 1987-05-05