KO

Keisuke Ohta

SK Showa Denko K.K.: 7 patents #183 of 1,736Top 15%
DI Daikin Industries: 7 patents #494 of 2,957Top 20%
ZE Zeon: 4 patents #174 of 734Top 25%
Sharp Kabushiki Kaisha: 4 patents #3,475 of 10,731Top 35%
KU Kurume University: 3 patents #1 of 75Top 2%
UI Ube Industries: 2 patents #593 of 1,686Top 40%
SD Showa Denko: 1 patents #231 of 593Top 40%
PE Pacific Engineering: 1 patents #24 of 59Top 45%
Ricoh Company: 1 patents #6,936 of 9,818Top 75%
Overall (All Time): #134,304 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
12355379 Power conversion system Reiji Kawashima, Koudai Okuzono, Masaki Kono, Masahide Fujiwara, Yuu Yoshikawa +1 more 2025-07-08
12249906 Air conditioner Masaki Kono, Reiji Kawashima 2025-03-11
12155212 Power control system and device Masaki Kouno, Reiji Kawashima, Hiroki Kojima 2024-11-26
12154742 Fuse Fumiyuki Kawase, Jyunhyoku Yang, Ryohei Hayase, Hiroshi Nakamura 2024-11-26
10907041 Polyether polymer composition and sheet The Ban Hoang, Shigetaka Hayano 2021-02-02
10851203 Polyether polymer composition The Ban Hoang, Shigetaka Hayano 2020-12-01
10590388 Cell culture method using bone marrow-like structure, and porous polyimide film for healing bone injury site Shingo HIRASHIMA, Masahiko Hagihara, Motohisa Shimizu 2020-03-17
10508264 Cell culture method using bone marrow-like structure, and porous polyimide film for healing bone injury site Shingo HIRASHIMA, Masahiko Hagihara, Motohisa Shimizu 2019-12-17
10429756 Toner, developer, process cartridge, image forming apparatus, image forming method, and method for manufacturing toner Kazuoki Fuwa, Hiroshi Yamashita, Yuka Mizoguchi, Shizuka Hashida, Toma Takebayashi +2 more 2019-10-01
10344124 Polyether-based polymer composition The Ban Hoang, Shigetaka Hayano, Yasuo Tsunogae 2019-07-09
9870894 Embedding resin composition for electron microscopey and method for observing sample with electron microscope using the same Toshiyuki Kiryu 2018-01-16
9819281 Power conversion control device 2017-11-14
9735698 Method of controlling power conversion apparatus 2017-08-15
9401656 Method of controlling power conversion apparatus 2016-07-26
9278348 Polyether compound, cross-linkable composition, and electrolyte Shigetaka Hayano, Hiroyuki Yonemaru 2016-03-08
9246398 Power converter Kenichi Sakakibara 2016-01-26
9241099 Camera module and electronic device Yoshihiro Sohtome 2016-01-19
8697912 N-(1-hydroxyethyl) carboxamide compound and process for producing same Syunichi Nagamatsu, Tetsuya Ishii 2014-04-15
7978590 Optical pickup apparatus, reproducing apparatus, recording apparatus, and tracking error signal generation method 2011-07-12
7939612 Radically polymerizable compound having a cyclic dithiocarbonate group Yasuyuki OYAMA, Kazufumi Kai 2011-05-10
7619960 Optical pickup device 2009-11-17
7569327 Curable polymer compound Hirotoshi Kamata, Kazufumi Kai 2009-08-04
7518001 Radically polymerizable sulfur-containing compound and radically polymerizable sulfur-containing polymer Tsuneo Tajima, Kazufumi Kai, Yasuyuki OYAMA 2009-04-14
7492695 Optical pick-up capable of increasing the quantity of received laser beam Takeshi Kanai 2009-02-17
7049350 Polymerizable compound, polymerizable composition and cured product containing the compound Yoshihiro Honda, Kazuhiko Ooga, Kazufumi Kai, Hiroshi Uchida 2006-05-23