MU

Mitsuhiro Umeyama

TO Toyota: 23 patents #895 of 26,838Top 4%
AC Aisin Aw Co.: 2 patents #784 of 2,011Top 40%
Aisin Seiki Kabushiki Kaisha: 1 patents #2,094 of 3,782Top 60%
Overall (All Time): #186,509 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDate
6881165 Hydraulic control apparatus of vehicle and control method Hiroatsu Endo, Tatsuya Ozeki, Akira Kasamatsu, Nobuyuki Nagashima, Hisanori Nomoto +3 more 2005-04-19
6662904 Friction engagement element with lubrication Kenji Omote, Takeshi Inuzuka, Shigeo Tsuzuki, Hisanori Nomoto, Yuji Iwase 2003-12-16
6637530 Hybrid vehicle control apparatus wherein battery is charged based on required charging amount and/or energy conversion efficiency of electric generator Hiroatsu Endo, Hidehiro Oba, Kazumi Hoshiya 2003-10-28
6524217 Apparatus for controlling vehicle drive units Akira Murakami, Masanori Ohtake, Hiroatsu Endo, Yuji Iwase 2003-02-25
6508741 Hydraulic control system for automatic transmissions Akira Murakami, Masanori Ohtake, Hisanori Nomoto, Nobuyuki Nagashima, Tomoe Osada +1 more 2003-01-21
6306057 Hybrid drive system Kunio Morisawa, Hiroyuki Shioiri, Yuji Iwase, Hiroshi Itoh, Nobuyuki Nagashima +1 more 2001-10-23
6201312 Drive control system for hybrid vehicles Hiroyuki Shioiri, Hidehiro Oba, Hiroatsu Endo, Kazumi Hoshiya 2001-03-13
6080199 Gear designing method, gear manufacturing method, and gear manufactured by the same method Masana Kato, Katsumi Inoue 2000-06-27
5603241 Vehicle transmission system capable of simultaneous slipping of frictional coupling devices disposed in different gear trains between input and output shafts 1997-02-18
5554082 Transmission with integral large and small planetary gears, and method of assembling the transmission Takashi Shimizu, Eiji Ichioka, Kinya Yoshii, Takeharu Koide, Makoto Funahashi 1996-09-10
5533943 Planetary gear device including planetary gears each having integrally formed large and small pinions Eiji Ichioka, Kinya Yoshii, Takeharu Koide, Makoto Funahashi, Takashi Shimizu +2 more 1996-07-09
5499703 Peak torque decreasing apparatus for an automobile power train Masayuki Kii, Hiroaki Nimura 1996-03-19
5269199 Torional damper type flywheel device 1993-12-14
5156067 Torsional damper type flywheel device 1992-10-20
5111714 Torsional damper type flywheel device Shinji Honoki, Katsuyuki Kobayashi, Toshihiro Ootake 1992-05-12
5097721 Torsional damper type flywheel device 1992-03-24
5065642 Apparatus for absorbing torque variation Junji Kagiyama, Kiyonori Kobayashi, Mototaka Nakane, Masakazu Kamiya, Masaki Inui +2 more 1991-11-19
5032107 Flywheel device with a torsional damper Masaki Inui, Kenichi Yamamoto, Tsuyoshi Sumi, Toshihiro Ohtake 1991-07-16
5025680 Torsional damper type flywheel device Masaki Inui, Kenichi Yamamoto, Kaoru Wakahara 1991-06-25
4950204 Flywheel with a torsional damper Masaki Inui 1990-08-21
4950205 Flywheel with a torsional damper 1990-08-21
4947706 Flywheel with a torsional damper Hiroshi Itoh, Hiroski Nimura, Kenichi Yamamoto 1990-08-14
4693354 Clutch damper Kaoru Wakahara, Hisao Ohtani, Kenichi Kametaka, Masaru Kinoshita, Nobuyuki Kobayashi 1987-09-15