KU

Kenji Umayahara

TO Toyota: 63 patents #99 of 26,838Top 1%
Mazda Motor: 1 patents #2,563 of 4,755Top 55%
Overall (All Time): #34,747 of 4,157,543Top 1%
64
Patents All Time

Issued Patents All Time

Showing 1–25 of 64 patents

Patent #TitleCo-InventorsDate
11489182 Fuel cell system Tetsuya Bono 2022-11-01
11367884 Hydrogen supply system, train and hydrogen supply method Shigeki TAKAIWA, Masahiro Yamakawa, Hideshi MIZUTANI, Takao Ozawa, Shigeyuki Suzuki 2022-06-21
11342568 Fuel cell vehicle and method using fuel cell vehicle Shigeki TAKAIWA, Masahiro Yamakawa, Hideshi MIZUTANI, Takao Ozawa, Shigeyuki Suzuki 2022-05-24
11285822 Electric power system and control method therefor Tomohiro Ogawa, Ryota Kawaguchi, Shota Okada 2022-03-29
11214151 Voltage control system with addition term and fuel cell system Yutaka Tano, Takahiro UMEHARA 2022-01-04
11152632 Fuel cell system and control method Tomohiro Ogawa, Ryota Kawaguchi, Yuji Murata 2021-10-19
11069204 Energy generation system using biomass and method of controlling the same Shigeki TAKAIWA, Masahiro Yamakawa, Hideshi MIZUTANI, Takao Ozawa, Shigeyuki Suzuki 2021-07-20
11018357 Fuel cell system and method of controlling fuel cell Tornio Yamanaka 2021-05-25
10868316 Fuel cell system and method of controlling the same Tomohiro Ogawa, Tomotaka Ishikawa, Tomio YAMANAKA, Ryoichi Nanba 2020-12-15
10818945 Voltage control system, fuel cell system, and control method for voltage control system Yutaka Tano, Takahiro UMEHARA, Tomoya Ogawa 2020-10-27
10644334 Fuel cell system Ryo Kajiura 2020-05-05
10497995 Fuel cell system and control method of the same Yuji Kakeno, Takao Watanabe 2019-12-03
10427685 Vehicle capable of regenerative braking, and control method of a vehicle capable of regenerative braking Mitsuhiro Nada, Takuya NAKAGAMI 2019-10-01
10291054 Fuel cell system Takao Watanabe, Akihiro Kamiya 2019-05-14
10128523 Fuel cell system and control method for the same Akihiro Kamiya, Takao Watanabe, Tomoya Ogawa 2018-11-13
10118493 System and method for controlling regenerative braking force of a vehicle Mitsuhiro Nada, Takuya NAKAGAMI 2018-11-06
10115990 Fuel cell system, fuel cell vehicle, and method for controlling fuel cell system Yuji Kakeno, Mitsuhiro Nada 2018-10-30
10103394 Fuel cell system programmed for improved air compressor control Yasuo Matsubara 2018-10-16
10099557 Vehicle driven by motor and control method of charging and discharging of secondary battery provided in vehicle Yasuo Matsubara 2018-10-16
10071649 Method for controlling external electric power supply system of fuel cell-mounted vehicle, and external electric power supply system Yasuo Matsubara, Keigo Suematsu 2018-09-11
10056626 Fuel cell system, fuel cell vehicle, and control method for fuel cell system Yuji Kakeno, Mitsuhiro Nada, Yutaka Tano 2018-08-21
9970447 Fuel cell system and method for controlling rotational speed of air compressor Kohei Oda 2018-05-15
9905869 Fuel cell system and method of controlling the same Takeshi Maenaka, Atsushi Imai 2018-02-27
9905866 Fuel cell system and fuel cell system control method Yasuo Matsubara 2018-02-27
9889763 External power supply of fuel cell mounted vehicle and control method therefor Yasuo Matsubara 2018-02-13