TU

Toshifumi Usui

HI Hitachi: 46 patents #351 of 28,497Top 2%
HC Hitachi Car Engineering Co.: 27 patents #7 of 465Top 2%
HC Hitachi Automotive Engineering Co.: 2 patents #95 of 314Top 35%
HC Hitachi Engineering Co.: 1 patents #187 of 572Top 35%
📍 Hitachinaka, JP: #71 of 2,447 inventorsTop 3%
Overall (All Time): #63,552 of 4,157,543Top 2%
46
Patents All Time

Issued Patents All Time

Showing 26–46 of 46 patents

Patent #TitleCo-InventorsDate
6371080 Throttle device for internal-combustion engine Yasuo Saito, Yoshikatsu Hashimoto, Eisuke Wayama 2002-04-16
6199537 Method and apparatus for controlling intake air flow rate of an engine and method for controlling output Takehiko Kowatari, Yuzo Kadomukai, Toshihiro Aono 2001-03-13
6098594 Electric-control-type throttle apparatus Takehiko Kowatari, Yuzo Kadomukai, Shigeru Tokumoto, Yasuo Saito, Masaru Ito 2000-08-08
6047680 Electronically controlled throttle apparatus for an engine Takahiro Shimura, Yoshikatsu Hashimoto, Shigeru Tokumoto, Yasuo Saito, Eisuke Wayama +1 more 2000-04-11
RE34403 Hot-wire type air flow meter and an internal combustion engine with the same Nobukatsu Arai, Yoshihito Sekine, Tadao Osawa, Hiroatsu Tokuda, Mitsukuni Tsutsui 1993-10-12
5231871 Hot-electrical-resistance type gas flow meter and internal combustion engine with hot-electrical-resistance type gas flow meter Nobukatsu Arai, Kaoru Uchiyama, Shinya Igarashi 1993-08-03
5083455 Air meter for an internal combustion engine and method of producing the same Yasuo Saito, Hirotoshi Kawano, Shinya Igarashi, Youichi Furuhashi 1992-01-28
4991560 Hot-wire air flow meter and internal combustion engine provided with same Nobukatsu Arai, Tetsuo Matsukura, Shinya Igarashi, Youichi Furuhashi 1991-02-12
4986115 Hot-wire air flow meter Yoshihito Sekine, Nobukatsu Arai, Tadao Osawa, Hiroatsu Tokuda, Mitsukuni Tsutsui 1991-01-22
4986116 Air flow meter for internal combustion engine Atsushi Hohkita 1991-01-22
4974445 Hot wire type of air flow meter and internal combustion engine using the same Nobukatsu Arai, Yoshihito Sekine, Tetsuo Matsukura, Mitsukuni Tsutsui, Hiroatsu Tokuda +1 more 1990-12-04
4887577 Hot-wire type air flow meter and an internal combustion engine with the same Nobukatsu Arai, Yoshihito Sekine, Tadao Osawa, Hiroatsu Tokuda, Mitsukuni Tsutsui 1989-12-19
4815192 Method of securing an elongated vibration amplifier member to an annular vibrating reed Syozo Yanagisawa, Hisanobu Kanamaru, Kazuhiro Tsuruoka 1989-03-28
4790178 Intake structure of internal combustion engine with bypass intake passage for mounting air flow meter Kinsaku Yamada, Tadao Osawa, Hirotoshi Kawano 1988-12-13
4782805 Control device for throttle valve for internal combustion engine Hirotoshi Kawano, Shozo Yanagisawa, Tadao Osawa, Yutaka Takaku 1988-11-08
4723443 Intake air flow sensor Shozo Yanagisawa, Tadao Osawa 1988-02-09
4615173 Exhaust emission control apparatus for diesel engine Shozo Yanagisawa 1986-10-07
4581891 Exhaust emission control device for diesel engine Shouzo Yanagisawa, Kazumi Iwai 1986-04-15
4549399 Exhaust emission control system for diesel engine Syozo Yanagisawa 1985-10-29
4506506 Exhaust emission control device for diesel engine Syozo Yanagisawa 1985-03-26
4397792 Throttle valve linkage for use with multi-carburetor assembly Takashige Kohno, Tadao Osawa, Tokihiko Sakuma 1983-08-09