Toshikazu Yamamoto

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multi-fiber connector fiber-optic measurement device and method
- Patent number 11,175,458
- Issue date Nov 16, 2021
- Yokogawa Electric Corporation
- Katsushi Ota
- G02 - OPTICS
Information Patent Grant
Testing method, light receiving device, and testing system
- Patent number 11,108,461
- Issue date Aug 31, 2021
- Yokogawa Electric Corporation
- Akira Tanigawa
- G01 - MEASURING TESTING
Information Patent Grant
Optical wavelength meter
- Patent number 9,146,161
- Issue date Sep 29, 2015
- Yokogawa Electric Corporation
- Toshikazu Yamamoto
- G01 - MEASURING TESTING
Information Patent Grant
Spectroscope
- Patent number 8,125,638
- Issue date Feb 28, 2012
- Yokogawa Electric Corporation
- Toshikazu Yamamoto
- G01 - MEASURING TESTING
Information Patent Grant
Spectroscope having spectroscopic paths with individual collimators
- Patent number 7,705,984
- Issue date Apr 27, 2010
- Yokogawa Electric Corporation
- Manabu Kojima
- G01 - MEASURING TESTING
Information Patent Grant
Wavelength calibration method and wavelength calibration apparatus
- Patent number 7,649,627
- Issue date Jan 19, 2010
- Yokogawa Electric Corporation
- Toshikazu Yamamoto
- G01 - MEASURING TESTING
Information Patent Grant
Depolarizer and spectroscope and polychromater
- Patent number 7,075,644
- Issue date Jul 11, 2006
- Yokogawa Electric Corporation
- Toshikazu Yamamoto
- G01 - MEASURING TESTING
Information Patent Grant
Monochromator and optical spectrum analyzer using the same
- Patent number 6,879,396
- Issue date Apr 12, 2005
- Ando Electric Co., Ltd.
- Tsutomu Kaneko
- G01 - MEASURING TESTING
Information Patent Grant
Depolarizing plate and an optical apparatus using the same
- Patent number 6,744,506
- Issue date Jun 1, 2004
- Ando Electric Co., Ltd.
- Tsutomu Kaneko
- G02 - OPTICS
Information Patent Grant
Polarization scrambler and monochromator
- Patent number 6,654,167
- Issue date Nov 25, 2003
- Ando Electric Co., Ltd.
- Toshikazu Yamamoto
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
TESTING METHOD, LIGHT RECEIVING DEVICE, AND TESTING SYSTEM
- Publication number 20210028858
- Publication date Jan 28, 2021
- YOKOGAWA ELECTRIC CORPORATION
- Akira Tanigawa
- G01 - MEASURING TESTING
Information Patent Application
MULTI-FIBER CONNECTOR FIBER-OPTIC MEASUREMENT DEVICE AND METHOD
- Publication number 20200379177
- Publication date Dec 3, 2020
- YOKOGAWA ELECTRIC CORPORATION
- Katsushi Ota
- G02 - OPTICS
Information Patent Application
OPTICAL SPECTRUM MEASUREMENT DEVICE
- Publication number 20180172512
- Publication date Jun 21, 2018
- YOKOGAWA ELECTRIC CORPORATION
- Ryo TAMAKI
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL WAVELENGTH METER
- Publication number 20140125984
- Publication date May 8, 2014
- Yokogawa Meters & Instruments Corporation
- Toshikazu YAMAMOTO
- G01 - MEASURING TESTING
Information Patent Application
SPECTROSCOPE
- Publication number 20090262347
- Publication date Oct 22, 2009
- Yokogawa Electric Corporation
- Toshikazu Yamamoto
- G01 - MEASURING TESTING
Information Patent Application
SPECTROSCOPE HAVING SPECTROSCOPIC PATHS WITH INDIVIDUAL COLLIMATORS
- Publication number 20090190127
- Publication date Jul 30, 2009
- YOKOGAWA ELECTRIC CORPORATION
- Manabu KOJIMA
- G01 - MEASURING TESTING
Information Patent Application
Wavelength calibration method and wavelength calibration apparatus
- Publication number 20070195318
- Publication date Aug 23, 2007
- YOKOGAWA ELECTRIC CORPORATION
- Toshikazu Yamamoto
- G01 - MEASURING TESTING
Information Patent Application
Depolarizer and spectroscope and polychromater
- Publication number 20040021942
- Publication date Feb 5, 2004
- Toshikazu Yamamoto
- G02 - OPTICS
Information Patent Application
Optical spectrum analyzer and optical spectrum measuring method
- Publication number 20030098975
- Publication date May 29, 2003
- Ando Electric Co., Ltd.
- Tohru Mori
- G01 - MEASURING TESTING
Information Patent Application
Monochromator and optical spectrum analyzer using the same
- Publication number 20030081208
- Publication date May 1, 2003
- Ando Electric Co., Ltd.
- Tsutomu Kaneko
- G01 - MEASURING TESTING
Information Patent Application
Depolarizer and spectroscope
- Publication number 20030007149
- Publication date Jan 9, 2003
- Ando Electric Co., Ltd.
- Toshikazu Yamamoto
- G01 - MEASURING TESTING
Information Patent Application
Depolarizing plate and an optical apparatus using the same
- Publication number 20020186371
- Publication date Dec 12, 2002
- Tsutomu Kaneko
- G02 - OPTICS
Information Patent Application
Polarization scrambler and monochromator
- Publication number 20020063959
- Publication date May 30, 2002
- Toshikazu Yamamoto
- G01 - MEASURING TESTING

Toshikazu Yamamoto

Person

Patents Grantslast 30 patents

Multi-fiber connector fiber-optic measurement device and method

Testing method, light receiving device, and testing system

Optical wavelength meter

Spectroscope

Spectroscope having spectroscopic paths with individual collimators

Wavelength calibration method and wavelength calibration apparatus

Depolarizer and spectroscope and polychromater

Monochromator and optical spectrum analyzer using the same

Depolarizing plate and an optical apparatus using the same

Polarization scrambler and monochromator

Patents Applicationslast 30 patents

TESTING METHOD, LIGHT RECEIVING DEVICE, AND TESTING SYSTEM

MULTI-FIBER CONNECTOR FIBER-OPTIC MEASUREMENT DEVICE AND METHOD

OPTICAL SPECTRUM MEASUREMENT DEVICE

OPTICAL WAVELENGTH METER

SPECTROSCOPE

SPECTROSCOPE HAVING SPECTROSCOPIC PATHS WITH INDIVIDUAL COLLIMATORS

Wavelength calibration method and wavelength calibration apparatus

Depolarizer and spectroscope and polychromater

Optical spectrum analyzer and optical spectrum measuring method

Monochromator and optical spectrum analyzer using the same

Depolarizer and spectroscope

Depolarizing plate and an optical apparatus using the same

Polarization scrambler and monochromator