YH

Yoichi Hayakawa

AI Aisin-Warner: 35 patents #1 of 98Top 2%
TO Toyota: 22 patents #976 of 26,838Top 4%
OD Oki Data: 12 patents #49 of 635Top 8%
AC Aisin Aw Co.: 10 patents #174 of 2,011Top 9%
FC Fuji Medical Instruments Mfg. Co.: 1 patents #7 of 22Top 35%
KA Kabushiki Kaisha Aichi: 1 patents #14 of 38Top 40%
Overall (All Time): #40,633 of 4,157,543Top 1%
59
Patents All Time

Issued Patents All Time

Showing 26–50 of 59 patents

Patent #TitleCo-InventorsDate
4896561 Lubricating oil supply device for transmission mechanism Tamotu Kobatake, Kagenori Fukumura, Seiichi Nishikawa 1990-01-30
4858500 Apparatus for controlling lock-up clutch in automatic transmission system having main transmission and sub-transmission Yoshiharu Harada, Yutaka Taga, Kagenori Fukumura, Masao Kawai 1989-08-22
4827807 Hydraulic control system for four-wheel drive torque transfer mechanism for vehicle Yasunobu Ito, Takahiro Sakai 1989-05-09
4823648 Hydraulic control system for four-wheel drive torque tranfer mechanism for vehicle Yasunobu Ito 1989-04-25
4753136 Hydraulic control of transmission Masao Kawai, Kagenori Fukumura, Seiichi Nishikawa 1988-06-28
4745826 Shift condition detector for an automatic vehicle transmission Seiichi Nishikawa, Yoshiharu Harada, Kagenori Fukumura, Masao Kawai 1988-05-24
4738159 Four-wheel drive automatic transmission Kozo Kato, Yutaka Taga, Shinya Nakamura 1988-04-19
4736653 Power transmission Kozo Kato, Kazuaki Watanabe, Yoshiharu Harada, Chihiro Hosono 1988-04-12
4735111 Brake support mechanism for transmissions Kozo Kato, Kazuaki Watanabe, Yoshiharu Harada 1988-04-05
4726262 Automatic transmission with overdrive inhibitor Kaiya Fujiura, Kazuaki Watanabe, Yoshiharu Harada 1988-02-23
4724725 Transmission control system for controlling a main transmission speed changing pattern relative to a subtransmission speed changing ratio Yoshiharu Harada, Yutaka Taga, Kagenori Fukumura, Masao Kawai 1988-02-16
4722249 Control system for a transmission having a main transmission and a sub-transmission Yoshiharu Harada, Yutaka Taga, Kenichi Yoshizawa, Masao Kawai 1988-02-02
4721018 Transmission control having a plurality of speed changing ratios for controlling a transmission system Yoshiharu Harada, Yutaka Taga, Seiichi Nishikawa, Masao Kawai 1988-01-26
4718311 Hydraulic control system for automatic transmissions Masao Kawai, Seiichi Nishikawa, Kagenori Fukumura 1988-01-12
4713989 Shift shock suppression in automatic transmission Masao Kawai, Seiichi Nishikawa, Kagenori Fukumura 1987-12-22
4713988 Transmission control device Yoshiharu Harada, Yutaka Taga, Kagenori Fukumura, Masao Kawai 1987-12-22
4708032 Transmission control device having selectable rotation speed detector Yoshiharu Harada, Yutaka Taga, Kagenori Fukumura, Masao Kawai 1987-11-24
4699249 Lubrication system for power transmission chain Kaiya Fujiura, Yoshiharu Harada, Kagenori Fukumura 1987-10-13
4697479 Engine throttle opening dependent hydraulic vehicular transmission system Masao Kawai, Kenichi Yoshizawa, Yoshiharu Harada, Kagenori Fukumura 1987-10-06
4693143 Control device for an automatic transmission system Yoshiharu Harada, Yutaka Taga, Kagenori Fukumura, Masao Kawai 1987-09-15
4688449 Transmission control device Yoshiharu Harada, Yutaka Taga, Seiichi Nishikawa, Masao Kawai 1987-08-25
4679450 Control system for selectively switchable two/four wheel drive automatic transmission system shifting transfer transmission according to main transmission speed stage Masao Kawai, Yutaka Taga, Kazuaki Watanabe, Yoshiharu Harada 1987-07-14
4673072 4-Wheel drive transmission control system Chihiro Hosono, Seitoku Kubo, Yutaka Taga, Shinya Nakamura 1987-06-16
4663992 Control system for a four-wheel drive transmission Kaiya Fujiura, Yutaka Taga, Shinya Nakamura 1987-05-12
4602696 Control system for selectively switchable two/four wheel drive automatic transmission system providing shifting characteristic matched to driving condition Yutaka Taga, Shinya Nakamura 1986-07-29