P

Inventor

OKAMOTO YOSHIO

JP135 patents
⚠️ This page may combine multiple inventors who share the name “OKAMOTO YOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

25 patents
US6543412B2Apr 8, 2003

Intake air control device and internal combustion engine mounting the same

HITACHI LTD72 citations96
US5992391ANov 30, 1999

Electromagnetic fuel injector and control method thereof

HITACHI LTD78 citations96
US6550458B2Apr 22, 2003

Electromagnetic fuel injection apparatus, an internal combustion engine having an electromagnetic fuel injection apparatus, and a drive circuit of an electromagnetic fuel injection apparatus

HITACHI LTD47 citations95
US6675766B2Jan 13, 2004

Fuel injection valve and internal combustion engine mounting the same

HITACHI LTD13 citations92
US6588399B2Jul 8, 2003

Fuel injection method of internal combustion engine and fuel injection apparatus of internal combustion engine

HITACHI LTD19 citations92
US6571773B1Jun 3, 2003

Fuel injector and internal combustion engine

HITACHI LTD50 citations92
US6474572B1Nov 5, 2002

Fuel-injection valve

HITACHI LTD33 citations92
US6453872B1Sep 24, 2002

Fuel injection valve and internal combustion engine mounting the same

HITACHI LTD20 citations92
US6345601B1Feb 12, 2002

Direct injection fuel injector and internal combustion engine mounting the same

HITACHI LTD42 citations92
US6332453B1Dec 25, 2001

Electromagnetic system fuel injection apparatus an internal combustion engine having an electromagnetic system fuel injection apparatus, and a drive circuit of an electromagnetic system fuel injection apparatus

HITACHI LTD16 citations92
US6129073AOct 10, 2000

Electromagnetic fuel injector and control method thereof

HITACHI LTD21 citations92
US5915352AJun 29, 1999

In-cylinder fuel injection device and internal combustion engine mounting the same

HITACHI LTD43 citations92
US5108037AApr 28, 1992

Fuel injection valve

HITACHI LTD39 citations92
US4546795AOct 15, 1985

Solenoid valve

HITACHI LTD34 citations92
US4887769ADec 19, 1989

Electromagnetic fuel injection valve

HITACHI LTD33 citations91
US5109823AMay 5, 1992

Fuel injector device and method of producing the same

HITACHI LTD28 citations89
US5109824AMay 5, 1992

Electromagnetic fuel injection valve

HITACHI LTD23 citations89
US4165950AAug 28, 1979

Fan having forward-curved blades

HITACHI LTD31 citations89
US6854448B2Feb 15, 2005

Fuel injection valve and fuel injection system

HITACHI LTD16 citations84
US6634338B1Oct 21, 2003

Fuel injection apparatus, fuel injection method and internal combustion engine

HITACHI LTD18 citations84
US6508236B2Jan 21, 2003

Fuel supply device and internal combustion engine mounting the same

HITACHI LTD15 citations84
US7334563B2Feb 26, 2008

Fuel injector and in-cylinder direct-injection gasoline engine

HITACHI LTD16 citations82
US5346137ASep 13, 1994

Electromagnetic fuel injection valve

HITACHI LTD19 citations82
US5098016AMar 24, 1992

Electromagnetic fuel injection valve

HITACHI LTD20 citations81
US4995559AFeb 26, 1991

Electromagnetic fuel injection valve

HITACHI LTD16 citations81

DAICEL CHEM

12 patents

DAINIPPON SCREEN MFG

3 patents

FUJITSU TAKAMISAWA COMPONENT

3 patents

HITACHI CAR ENG CO LTD

1 patent

HIATCHI LTD

1 patent

HITACHI LDT

1 patent

NAKANO VINEGAR CO LTD

1 patent

OKAMOTO YOSHIO

1 patent

TAKAMISAWA ELECTRIC CO

1 patent

FUJITSU COMPONENT LTD

1 patent

Showing the top 50 of 135 patents by PatentIndex Score.