Naohiko Takahashi

Person

Shimoinayoshi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Tilting-pad-type journal bearing
- Patent number 11,255,377
- Issue date Feb 22, 2022
- Hitachi Industrial Products, Ltd.
- Isao Hagiya
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Tilting pad journal bearing and rotary machine using same
- Patent number 11,204,062
- Issue date Dec 21, 2021
- Hitachi Industrial Products, Ltd.
- Makoto Hemmi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Barrel-shaped centrifugal compressor
- Patent number 9,004,857
- Issue date Apr 14, 2015
- Hitachi, Ltd.
- Yohei Magara
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Apparatus and method for measuring vibration characteristics
- Patent number 8,960,009
- Issue date Feb 24, 2015
- Hitachi, Ltd.
- Naohiko Takahashi
- G01 - MEASURING TESTING
Information Patent Grant
Turbo compressor
- Patent number 6,692,224
- Issue date Feb 17, 2004
- Hitachi, Ltd.
- Haruo Miura
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Position-sensorless controlling method of synchronous motor
- Patent number 6,462,492
- Issue date Oct 8, 2002
- Hitachi, Ltd.
- Kiyoshi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of estimating a rotor position of synchronous motor, method...
- Patent number 6,396,229
- Issue date May 28, 2002
- Hitachi, Ltd.
- Kiyoshi Sakamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Permanent-magnet-type electric rotating machine and air compressor...
- Patent number 6,369,478
- Issue date Apr 9, 2002
- Hitachi, Ltd.
- Haruo Koharagi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Dampening disk assembly with spring retaining plate
- Patent number 6,251,018
- Issue date Jun 26, 2001
- Exedy Corporation
- Hideki Hashimoto
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Two-stage centrifugal compressor
- Patent number 6,196,809
- Issue date Mar 6, 2001
- Hitachi, Ltd.
- Kazuki Takahashi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Spline hub and method of manufacturing the spline hub
- Patent number 6,138,811
- Issue date Oct 31, 2000
- Exedy Corporation
- Hideki Hashimoto
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Magnetic bearing, rotating machine mounting the same, and method fo...
- Patent number 6,111,333
- Issue date Aug 29, 2000
- Hitachi, Ltd.
- Naohiko Takahashi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Rotor for permanent magnet excited, high-speed electric rotary mach...
- Patent number 6,047,461
- Issue date Apr 11, 2000
- Hitachi, Ltd.
- Haruo Miura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multi-stage compressor having first and second passages for cooling...
- Patent number 5,980,218
- Issue date Nov 9, 1999
- Hitachi, Ltd.
- Kazuki Takahashi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
High-speed rotor and controller for controlling magnetic bearings u...
- Patent number 5,576,587
- Issue date Nov 19, 1996
- Hitachi, Ltd.
- Naohiko Takahashi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Magnetic bearing apparatus and rotating machine having such an appa...
- Patent number 5,491,396
- Issue date Feb 13, 1996
- Hitachi, Ltd.
- Naohiko Takahashi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method and apparatus for controlling a magnetic bearing
- Patent number 5,486,729
- Issue date Jan 23, 1996
- Hitachi, Ltd.
- Osami Matsushita
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Balancing method for flexible rotor and a balancer applicable to th...
- Patent number 5,408,875
- Issue date Apr 25, 1995
- Hitachi, Ltd.
- Osami Matsushita
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic bearing control method and apparatus
- Patent number 5,256,952
- Issue date Oct 26, 1993
- Hitachi, Ltd.
- Mitsuho Yoneyama
- G05 - CONTROLLING REGULATING
Information Patent Grant
Band pass filter device and a method of filtering using such a device
- Patent number 4,992,714
- Issue date Feb 12, 1991
- Hitachi, Ltd.
- Osami Matsushita
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Cause-of-Anomaly Estimation Device for Fluid Machine, Cause-of Anom...
- Publication number 20250035123
- Publication date Jan 30, 2025
- Hitachi Industrial Products, Ltd.
- Yohei MAGARA
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Tilting-Pad-Type Journal Bearing
- Publication number 20210285486
- Publication date Sep 16, 2021
- Hitachi, Ltd.
- Isao HAGIYA
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
TILTING PAD JOURNAL BEARING AND ROTARY MACHINE USING SAME
- Publication number 20200355219
- Publication date Nov 12, 2020
- Hitachi Industrial Products, Ltd.
- Makoto HEMMI
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
TILTING PAD BEARING DEVICE AND ROTATING MACHINE
- Publication number 20200355218
- Publication date Nov 12, 2020
- Hitachi Industrial Products, Ltd.
- Motoki SATO
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
APPARATUS AND METHOD FOR MEASURING VIBRATION CHARACTERISTICS
- Publication number 20120272740
- Publication date Nov 1, 2012
- Hitachi Plant Technologies, Ltd.
- Naohiko TAKAHASHI
- G01 - MEASURING TESTING
Information Patent Application
BARREL-SHAPED CENTRIFUGAL COMPRESSOR
- Publication number 20110318163
- Publication date Dec 29, 2011
- Hitachi Plant Technologies, Ltd.
- Yohei Magara
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
CENTRIFUGAL COMPRESSOR
- Publication number 20100034646
- Publication date Feb 11, 2010
- Hitachi Plant Technologies, Ltd.
- Yohei MAGARA
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Turbo compressor
- Publication number 20030059299
- Publication date Mar 27, 2003
- Haruo Miura
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Naohiko Takahashi

Person

Patents Grantslast 30 patents

Tilting-pad-type journal bearing

Tilting pad journal bearing and rotary machine using same

Barrel-shaped centrifugal compressor

Apparatus and method for measuring vibration characteristics

Turbo compressor

Position-sensorless controlling method of synchronous motor

Method of estimating a rotor position of synchronous motor, method...

Permanent-magnet-type electric rotating machine and air compressor...

Dampening disk assembly with spring retaining plate

Two-stage centrifugal compressor

Spline hub and method of manufacturing the spline hub

Magnetic bearing, rotating machine mounting the same, and method fo...

Rotor for permanent magnet excited, high-speed electric rotary mach...

Multi-stage compressor having first and second passages for cooling...

High-speed rotor and controller for controlling magnetic bearings u...

Magnetic bearing apparatus and rotating machine having such an appa...

Method and apparatus for controlling a magnetic bearing

Balancing method for flexible rotor and a balancer applicable to th...

Magnetic bearing control method and apparatus

Band pass filter device and a method of filtering using such a device

Patents Applicationslast 30 patents

Cause-of-Anomaly Estimation Device for Fluid Machine, Cause-of Anom...

Tilting-Pad-Type Journal Bearing

TILTING PAD JOURNAL BEARING AND ROTARY MACHINE USING SAME

TILTING PAD BEARING DEVICE AND ROTATING MACHINE

APPARATUS AND METHOD FOR MEASURING VIBRATION CHARACTERISTICS

BARREL-SHAPED CENTRIFUGAL COMPRESSOR

CENTRIFUGAL COMPRESSOR

Turbo compressor