Inventor
FUJIWARA HIDETOSHI
JP23 patents
⚠️ This page may combine multiple inventors who share the name “FUJIWARA HIDETOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYODA MACHINE WORKS LTD
13 patentsUS6203303B1Mar 20, 2001
Vane pump
TOYODA MACHINE WORKS LTD28 citations92
US6068461AMay 30, 2000
Vane type rotary pump having a discharge port with a tapered bearded groove
TOYODA MACHINE WORKS LTD31 citations92
US6041807AMar 28, 2000
Flow control device of power steering apparatus
TOYODA MACHINE WORKS LTD23 citations92
US4971535ANov 20, 1990
Tandem rotary pump with pressure chamber between two intermediate side plates
TOYODA MACHINE WORKS LTD65 citations90
US4549566AOct 29, 1985
Flow volume control device for power steering system
TOYODA MACHINE WORKS LTD21 citations82
US6648620B2Nov 18, 2003
Rotary pump apparatus
TOYODA MACHINE WORKS LTD11 citations74
US6877969B2Apr 12, 2005
Vane pump
TOYODA MACHINE WORKS LTD11 citations73
US4545449AOct 8, 1985
Power steering system with engine idling-up mechanism
TOYODA MACHINE WORKS LTD14 citations73
US4579309AApr 1, 1986
Attachment for a resinous reservoir
TOYODA MACHINE WORKS LTD17 citations72
US5213491AMay 25, 1993
Tandem pump having a different sized vane for each pump
TOYODA MACHINE WORKS LTD16 citations71
US6912921B2Jul 5, 2005
Torque detecting device
TOYODA MACHINE WORKS LTD8 citations67
US6877961B2Apr 12, 2005
Vane pump with a bypass valve and passage arrangement for equalizing excess fluid flow through dual suction passages
TOYODA MACHINE WORKS LTD2 citations63
US6299418B1Oct 9, 2001
Oil pump apparatus
TOYODA MACHINE WORKS LTD4 citations62