Inventor
KAWAHATA FUMIAKI
JP18 patents
Patents
18 patentsUS5895100AApr 20, 1999
Brake apparatus for an electric vehicle to maximize regenerative energy
TOYOTA MOTOR CO LTD111 citations98
US6450591B1Sep 17, 2002
Hydraulic brake pressure control system
TOYOTA MOTOR CO LTD82 citations97
US6354672B1Mar 12, 2002
Braking system wherein brake cylinder is communicated with pedal-operated pressure source upon failure of pump-operated pressure source
TOYOTA MOTOR CO LTD59 citations96
US6425644B2Jul 30, 2002
Braking pressure control apparatus having device for diagnosing manually operated hydraulic system
TOYOTA MOTOR CO LTD35 citations92
US6164734ADec 26, 2000
Vehicle hydraulic braking system having reservoir for storing fluid discharged from brake cylinder through pressure control valve device
TOYOTA MOTOR CO LTD24 citations92
US6126248AOct 3, 2000
Hydraulic brake device
TOYOTA MOTOR CO LTD40 citations92
US6123397ASep 26, 2000
Brake fluid pressure control device
TOYOTA MOTOR CO LTD23 citations92
US6007164ADec 28, 1999
Brake fluid pressure control apparatus for compensating a malfunction of brake operational force sensor
TOYOTA MOTOR CO LTD21 citations92
US5984432ANov 16, 1999
Pressure control apparatus including seating valve controlled by electric current incremented upon valve opening depending upon pressure difference across the valve
TOYOTA MOTOR CO LTD52 citations92
US5658057AAug 19, 1997
Hydraulic braking apparatus having hydraulic pressure control valve and electrically controlled device to control the pressure control valve
TOYOTA MOTOR CO LTD27 citations92
US6957870B2Oct 25, 2005
Braking pressure control apparatus capable of switching between two brake operating states using power-operated and manually operated pressure sources, respectively
TOYOTA MOTOR CO LTD44 citations91
US5979997ANov 9, 1999
Hydraulic brake control apparatus
TOYOTA MOTOR CO LTD30 citations91
US5727851AMar 17, 1998
Hydraulic brake apparatus
TOYOTA MOTOR CO LTD19 citations84
US5882089AMar 16, 1999
Hydraulic brake system for controlling fluid flow to a wheel cylinder
TOYOTA MOTOR CO LTD16 citations74
US5711584AJan 27, 1998
Hydraulic brake apparatus for preventing shortage of brake fluid in a master cylinder due to failure of a high pressure source
TOYOTA MOTOR CO LTD8 citations73
US5951120ASep 14, 1999
Hydraulic brake control apparatus
TOYOTA MOTOR CO LTD13 citations72
US5992949ANov 30, 1999
Hydraulic brake control apparatus
TOYOTA MOTOR CO LTD6 citations62
US4625904ADec 2, 1986
Structure of disc wheel
TOYOTA MOTOR CO LTD4 citations62