HK

Hiroaki Koyama

ML Mitsubishi Pencil Company, Limited: 10 patents #24 of 302Top 8%
KL Kanebo, Limited: 8 patents #10 of 571Top 2%
NK Nippon Kayaku: 4 patents #176 of 1,103Top 20%
Honda Motor Co.: 3 patents #6,619 of 21,052Top 35%
TC Toppan Printing Co.: 3 patents #268 of 1,467Top 20%
MC Mitsubishi Chemical: 2 patents #163 of 716Top 25%
MK Mitsubishi Pencil Kabushikikaisha: 1 patents #15 of 34Top 45%
📍 Fujioka, JP: #4 of 89 inventorsTop 5%
Overall (All Time): #117,511 of 4,157,543Top 3%
31
Patents All Time

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #TitleCo-InventorsDate
12176547 Catalyst layer for polymer electrolyte fuel cells, membrane-electrode assembly, and polymer electrolyte fuel cell Madoka OZAWA 2024-12-24
11667261 Gas generator Shinya Ueda, Satoshi Ohsugi, Haruki TAKIZAWA 2023-06-06
11110885 Gas generator Shinya Ueda, Satoshi Ohsugi, Makoto Tsuruta, Motohiro Kanaji, Hirotaka Mukunoki 2021-09-07
11001224 Gas generator Shinya Ueda, Satoshi Ohsugi, Haruki TAKIZAWA 2021-05-11
10676061 Gas generator Yusuke Tanaka, Motohiro Kanaji, Shinya Hasegawa 2020-06-09
9375068 Click-type applicator 2016-06-28
9339452 High internal water phase water-in-oil emulsified cosmetic and cosmetic liquid applicator Satoshi Sakuma, Nobuyuki Nakajima, Susumu Suzuki, Yuusuke Kyogoku, Yukako Shinmura 2016-05-17
8963147 Thin film transistor, method of manufacturing the same, and image display device equipped with thin film transistor Chihiro Imamura, Yukari Miyairi 2015-02-24
8777506 Liquid applicator Tetsuaki Akaishi 2014-07-15
8597086 Tool holder Daisuke Noro, Kenji Sugai, Hiroaki YOSHIKAWA, Satoshi Mitsuyose, Takefumi Mizuhori 2013-12-03
8282303 Liquid applicator Takashi Umeno, Mitsuru Endou, Tetsuaki Akaishi 2012-10-09
8206051 Cosmetic-containing applicator and replacement brush Kiyokazu Sakurai, Mitsuru Endou, Tetsuaki Akaishi, Masaaki Morita 2012-06-26
8022437 Organic electroluminescence element and method for manufacturing thereof 2011-09-20
7803198 Hair dye and applicator for hair using the same Takashi Umeno, Keiichiro Takachiyo 2010-09-28
7600556 Mold for casting and method of surface treatment thereof Yasuhiro Shimamura, Toshihiro Miyauchi, Michiharu Hasegawa, Fumitaka Miyagawa 2009-10-13
7497243 Mold for casting and method for manufacture thereof Toshihiro Miyauchi, Yasuhiro Shimamura, Michiharu Hasegawa, Naoji Yamamoto, Masahito Hasuike +2 more 2009-03-03
6435747 Double ended direct-feed type writing implement Kazuhiko Furukawa, Takeshi Kobayashi, Yojiro Sano, Yosuke Mito 2002-08-20
5918993 Clicking-type writing implement 1999-07-06
5915871 Ball-point pen cap Seiichi Kobayashi, Kazuhiko Furukawa, Toru Kitao 1999-06-29
5871296 Clicking-type writing implement Kazuhiko Furukawa 1999-02-16
5711626 Ball-point pen with back flow stop Seiichi Kobayashi, Kazuhiko Furukawa, Toru Kitao 1998-01-27
4598110 Resin composition containing granular or powdery phenol-aldehyde resin Shigeo Shimizu 1986-07-01
4596845 Resin composition containing granular or powdery phenol-aldehyde resin Shigeo Shimizu 1986-06-24
4558089 Resin composition containing granular or powdery phenol-aldehyde resin Shigeo Shimizu 1985-12-10
4476277 Resin composition containing granular or powdery phenol-aldehyde resin Shigeo Shimizu 1984-10-09