Naoki Oikawa

Follow

Person

Ogawara-cho, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Channel selector valve
- Patent number 11,519,519
- Issue date Dec 6, 2022
- Hitachi Astemo, Ltd.
- Naoki Oikawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic control apparatus and hydraulic control method
- Patent number 10,801,494
- Issue date Oct 13, 2020
- Yamada Manufacturing Co., Ltd.
- Yuji Senbongi
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Fluid pressure control device
- Patent number 9,494,247
- Issue date Nov 15, 2016
- Keihin Corporation
- Naoki Oikawa
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Linear solenoid and valve device using the same
- Patent number 8,585,014
- Issue date Nov 19, 2013
- Keihin Corporation
- Naoki Oikawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Linear solenoid and valve device using the same
- Patent number 8,556,232
- Issue date Oct 15, 2013
- Keihin Corporation
- Naoki Oikawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Electromagnetic spool valve
- Patent number 8,397,759
- Issue date Mar 19, 2013
- Keihin Corporation
- Naoki Oikawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
CHANNEL SELECTOR VALVE
- Publication number 20200309281
- Publication date Oct 1, 2020
- Keihin Corporation
- Naoki Oikawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
HYDRAULIC CONTROL APPARATUS AND HYDRAULIC CONTROL METHOD
- Publication number 20190017596
- Publication date Jan 17, 2019
- Yamada Manufacturing Co., Ltd.
- Yuji Senbongi
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
FLUID PRESSURE CONTROL DEVICE
- Publication number 20150337980
- Publication date Nov 26, 2015
- Keihin Corporation
- Naoki OIKAWA
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
LINEAR SOLENOID AND VALVE DEVICE USING THE SAME
- Publication number 20110073791
- Publication date Mar 31, 2011
- Keihin Corporation
- Naoki Oikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LINEAR SOLENOID AND VALVE DEVICE USING THE SAME
- Publication number 20100308244
- Publication date Dec 9, 2010
- Keihin Corporation
- Naoki OIKAWA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Electromagnetic spool valve
- Publication number 20090224192
- Publication date Sep 10, 2009
- Keihin Corporation
- Naoki Oikawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...