Masahiro YANAGISAWA

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multicast switch
- Patent number 11,287,578
- Issue date Mar 29, 2022
- NTT Electronics Corporation
- Mitsuru Nagano
- G02 - OPTICS
Information Patent Grant
Optical waveguide device and module
- Patent number 10,126,502
- Issue date Nov 13, 2018
- NTT Electronics Corporation
- Takanori Ishikawa
- G02 - OPTICS
Information Patent Grant
Dispersant and method for producing same, ink, and method for formi...
- Patent number 10,100,138
- Issue date Oct 16, 2018
- Ricoh Company, Ltd.
- Masahiro Yanagisawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical waveguide device and module
- Patent number 9,684,129
- Issue date Jun 20, 2017
- NTT Electronics Corporation
- Takanori Ishikawa
- G02 - OPTICS
Information Patent Grant
Optical waveguide device and module
- Patent number 9,020,307
- Issue date Apr 28, 2015
- NTT Electronics Corporation
- Takanori Ishikawa
- G02 - OPTICS
Information Patent Grant
Optical sensor
- Patent number 8,900,524
- Issue date Dec 2, 2014
- Waseda University
- Masahiro Yanagisawa
- G01 - MEASURING TESTING
Information Patent Grant
Electrochromic display apparatus and method of manufacturing the same
- Patent number 8,736,941
- Issue date May 27, 2014
- Ricoh Company, Ltd.
- Yoshihisa Naijo
- G02 - OPTICS
Information Patent Grant
Fine particles and method of producing thereof, fine particle dispe...
- Patent number 8,728,620
- Issue date May 20, 2014
- Ricoh Company, Ltd.
- Masahiro Yanagisawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Waveguide device and module
- Patent number 8,625,943
- Issue date Jan 7, 2014
- Nippon Telegraph and Telephone Corporation
- Shunichi Soma
- G02 - OPTICS
Information Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
- Patent number 8,554,040
- Issue date Oct 8, 2013
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
- Patent number 8,538,222
- Issue date Sep 17, 2013
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
- Patent number 8,463,097
- Issue date Jun 11, 2013
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Grant
Electrophoretic liquid and display device using electrophoretic liquid
- Patent number 8,441,713
- Issue date May 14, 2013
- Ricoh Company, Ltd.
- Ikue Kawashima
- G02 - OPTICS
Information Patent Grant
Electrochromic display device, fabrication method therefor, and dri...
- Patent number 8,384,983
- Issue date Feb 26, 2013
- Ricoh Company, Ltd.
- Tohru Yashiro
- G02 - OPTICS
Information Patent Grant
Image display device and control method thereof
- Patent number 8,144,117
- Issue date Mar 27, 2012
- Ricoh Company, Ltd.
- Atsushi Okada
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electrophoretic particle, electrophoretic particle dispersion liqui...
- Patent number 7,952,791
- Issue date May 31, 2011
- Ricoh Company, Ltd.
- Masahiro Yanagisawa
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Electrophoretic dispersion solution, image display medium using the...
- Patent number 7,880,955
- Issue date Feb 1, 2011
- Ricoh Company, Ltd.
- Yoshihisa Naijo
- G02 - OPTICS
Information Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
- Patent number 7,856,163
- Issue date Dec 21, 2010
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Grant
Optical functional circuit
- Patent number 7,580,597
- Issue date Aug 25, 2009
- Nippon Telegraph and Telephone Corporation
- Tsutomu Kitoh
- G02 - OPTICS
Information Patent Grant
Wave transmission medium and waveguide circuit
- Patent number 7,397,977
- Issue date Jul 8, 2008
- Nippon Telegraph and Telephone Corporation
- Toshikazu Hashimoto
- G02 - OPTICS
Information Patent Grant
Wavelength multi/demultiplexer
- Patent number 7,313,297
- Issue date Dec 25, 2007
- Nippon Telegraph and Telephone Corporation
- Masahiro Yanagisawa
- G02 - OPTICS
Information Patent Grant
Magnetic disc apparatus production method
- Patent number 7,082,671
- Issue date Aug 1, 2006
- TDK Corporation
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc apparatus and magnetic head in which a recording/repr...
- Patent number 6,928,722
- Issue date Aug 16, 2005
- TDK Corporation
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Silicone-oil soluble polymer, image display medium using the silico...
- Patent number 6,858,164
- Issue date Feb 22, 2005
- Ricoh Company Limited
- Masahiro Yanagisawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophoretic composition, image display medium using same and im...
- Patent number 6,765,713
- Issue date Jul 20, 2004
- Ricoh Company, Ltd.
- Masahiro Yanagisawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Image display medium and image display device using the image displ...
- Patent number 6,590,696
- Issue date Jul 8, 2003
- Ricoh Company Limited
- Masahiro Yanagisawa
- G02 - OPTICS
Information Patent Grant
Magnetic disc apparatus and magnetic head in which a recording/repr...
- Patent number 6,487,045
- Issue date Nov 26, 2002
- NEC Corporation
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical module
- Patent number 6,480,639
- Issue date Nov 12, 2002
- Nippon Telegraph & Telephone Corp.
- Toshikazu Hashimoto
- G02 - OPTICS
Information Patent Grant
Contact magnetic disk apparatus
- Patent number 6,252,737
- Issue date Jun 26, 2001
- NEC Corporation
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive having small clearance between magnetic disk an...
- Patent number 6,236,532
- Issue date May 22, 2001
- NEC Corporation
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Optical Device Manufacturing Method and Manufacturing Apparatus Usi...
- Publication number 20230341768
- Publication date Oct 26, 2023
- NTT ELECTRONICS CORPORATION
- Yoshinori Hibino
- G02 - OPTICS
Information Patent Application
Multicast Switch
- Publication number 20210018692
- Publication date Jan 21, 2021
- NTT ELECTRONICS CORPORATION
- Mitsuru Nagano
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE DEVICE AND MODULE
- Publication number 20170146742
- Publication date May 25, 2017
- NTT Electronics Corporation
- Takanori Ishikawa
- G02 - OPTICS
Information Patent Application
DISPERSING AGENT, A METHOD FOR MANUFACTURING A DISPERSING AGENT, AN...
- Publication number 20160354744
- Publication date Dec 8, 2016
- RICOH COMPANY, LTD.
- Masahiro YANAGISAWA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
PLATING APPARATUS AND SENSING DEVICE USING SAME
- Publication number 20160230285
- Publication date Aug 11, 2016
- Waseda University
- Wataru Yamamoto
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
OPTICAL WAVEGUIDE DEVICE AND MODULE
- Publication number 20150205043
- Publication date Jul 23, 2015
- NTT Electronics Corporation
- Takanori Ishikawa
- G02 - OPTICS
Information Patent Application
DISPERSANT AND METHOD FOR PRODUCING SAME, INK, AND METHOD FOR FORMI...
- Publication number 20150069306
- Publication date Mar 12, 2015
- Masahiro YANAGISAWA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DISPERSING AGENT, A METHOD FOR MANUFACTURING A DISPERSING AGENT, AN...
- Publication number 20140272177
- Publication date Sep 18, 2014
- RICOH COMPANY, LTD.
- Masahiro Yanagisawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Planar Lightwave Circuit, Design Method for Wave Propagation Circui...
- Publication number 20120311516
- Publication date Dec 6, 2012
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Application
Planar Lightwave Circuit, Design Method for Wave Propagation Circui...
- Publication number 20120304143
- Publication date Nov 29, 2012
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE DEVICE AND MODULE
- Publication number 20120251041
- Publication date Oct 4, 2012
- Nippon Telegraph and Telephone Corporation
- Takanori Ishikawa
- G02 - OPTICS
Information Patent Application
ELECTROCHROMIC DISPLAY DEVICE, FABRICATION METHOD THEREFOR, AND DRI...
- Publication number 20120033286
- Publication date Feb 9, 2012
- RICOH COMPANY, LTD.
- Tohru YASHIRO
- G02 - OPTICS
Information Patent Application
FINE PARTICLES AND METHOD OF PRODUCING THEREOF, FINE PARTICLE DISPE...
- Publication number 20110257354
- Publication date Oct 20, 2011
- Masahiro YANAGISAWA
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
ELECTROCHROMIC DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME
- Publication number 20110222139
- Publication date Sep 15, 2011
- RICOH COMPANY, LTD.,
- Yoshihisa NAIJO
- G02 - OPTICS
Information Patent Application
ELECTROPHORETIC LIQUID AND DISPLAY DEVICE USING ELECTROPHORETIC LIQUID
- Publication number 20110134508
- Publication date Jun 9, 2011
- Ikue Kawashima
- G02 - OPTICS
Information Patent Application
WAVEGUIDE DEVICE AND MODULE
- Publication number 20110064355
- Publication date Mar 17, 2011
- Nippon Telegraph and Telephone Corporation
- Shunichi Soma
- G02 - OPTICS
Information Patent Application
OPTICAL SENSOR
- Publication number 20110051142
- Publication date Mar 3, 2011
- Waseda University
- Masahiro Yanagisawa
- G01 - MEASURING TESTING
Information Patent Application
Planer Lightwave Circuit, Design Method for Wave Propagation Circui...
- Publication number 20100274541
- Publication date Oct 28, 2010
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Application
ELECTROPHORETIC DISPERSION SOLUTION, IMAGE DISPLAY MEDIUM USING THE...
- Publication number 20100002287
- Publication date Jan 7, 2010
- RICOH COMPANY, LTD.
- Yoshihisa NAIJO
- G02 - OPTICS
Information Patent Application
ELECTROPHORETIC PARTICLE, ELECTROPHORETIC PARTICLE DISPERSION LIQUI...
- Publication number 20090207476
- Publication date Aug 20, 2009
- Masahiro Yanagisawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
IMAGE DISPLAY DEVICE AND CONTROL METHOD THEREOF
- Publication number 20090109145
- Publication date Apr 30, 2009
- Atsushi Okada
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Planar Lightwave Circuit, Design Method for Wave Propagation Circui...
- Publication number 20080273829
- Publication date Nov 6, 2008
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- G02 - OPTICS
Information Patent Application
Optical Functional Circuit
- Publication number 20080232736
- Publication date Sep 25, 2008
- Nippon Telegraph and Telephone Corporation
- Tsutomu Kitoh
- G02 - OPTICS
Information Patent Application
Fine Particles and Method of Producing Thereof, Fine Particle Dispe...
- Publication number 20080193769
- Publication date Aug 14, 2008
- Masahiro Yanagisawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Wave transmission medium and waveguide circuit
- Publication number 20060126992
- Publication date Jun 15, 2006
- Toshikazu Hashimoto
- G02 - OPTICS
Information Patent Application
Information recording/reproduction head
- Publication number 20050099932
- Publication date May 12, 2005
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc apparatus and magnetic head in which a recording/repr...
- Publication number 20040233583
- Publication date Nov 25, 2004
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc apparatus, magnetic head, and production methods thereof
- Publication number 20020191342
- Publication date Dec 19, 2002
- Masahiro Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Application
Silicone-oil soluble polymer, image display medium using the silico...
- Publication number 20020146572
- Publication date Oct 10, 2002
- Masahiro Yanagisawa
- G02 - OPTICS
Information Patent Application
Image display medium and image display device using the image displ...
- Publication number 20020027701
- Publication date Mar 7, 2002
- RICOH COMPANY LIMITED
- Masahiro Yanagisawa
- G02 - OPTICS

Masahiro YANAGISAWA

Person

Patents Grantslast 30 patents

Multicast switch

Optical waveguide device and module

Dispersant and method for producing same, ink, and method for formi...

Optical waveguide device and module

Optical waveguide device and module

Optical sensor

Electrochromic display apparatus and method of manufacturing the same

Fine particles and method of producing thereof, fine particle dispe...

Waveguide device and module

Planar lightwave circuit, design method for wave propagation circui...

Planar lightwave circuit, design method for wave propagation circui...

Planar lightwave circuit, design method for wave propagation circui...

Electrophoretic liquid and display device using electrophoretic liquid

Electrochromic display device, fabrication method therefor, and dri...

Image display device and control method thereof

Electrophoretic particle, electrophoretic particle dispersion liqui...

Electrophoretic dispersion solution, image display medium using the...

Planar lightwave circuit, design method for wave propagation circui...

Optical functional circuit

Wave transmission medium and waveguide circuit

Wavelength multi/demultiplexer

Magnetic disc apparatus production method

Magnetic disc apparatus and magnetic head in which a recording/repr...

Silicone-oil soluble polymer, image display medium using the silico...

Electrophoretic composition, image display medium using same and im...

Image display medium and image display device using the image displ...

Magnetic disc apparatus and magnetic head in which a recording/repr...

Optical module

Contact magnetic disk apparatus

Magnetic disk drive having small clearance between magnetic disk an...

Patents Applicationslast 30 patents

Optical Device Manufacturing Method and Manufacturing Apparatus Usi...

Multicast Switch

OPTICAL WAVEGUIDE DEVICE AND MODULE

DISPERSING AGENT, A METHOD FOR MANUFACTURING A DISPERSING AGENT, AN...

PLATING APPARATUS AND SENSING DEVICE USING SAME

OPTICAL WAVEGUIDE DEVICE AND MODULE

DISPERSANT AND METHOD FOR PRODUCING SAME, INK, AND METHOD FOR FORMI...

DISPERSING AGENT, A METHOD FOR MANUFACTURING A DISPERSING AGENT, AN...

Planar Lightwave Circuit, Design Method for Wave Propagation Circui...

Planar Lightwave Circuit, Design Method for Wave Propagation Circui...

OPTICAL WAVEGUIDE DEVICE AND MODULE

ELECTROCHROMIC DISPLAY DEVICE, FABRICATION METHOD THEREFOR, AND DRI...

FINE PARTICLES AND METHOD OF PRODUCING THEREOF, FINE PARTICLE DISPE...

ELECTROCHROMIC DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME

ELECTROPHORETIC LIQUID AND DISPLAY DEVICE USING ELECTROPHORETIC LIQUID

WAVEGUIDE DEVICE AND MODULE

OPTICAL SENSOR

Planer Lightwave Circuit, Design Method for Wave Propagation Circui...

ELECTROPHORETIC DISPERSION SOLUTION, IMAGE DISPLAY MEDIUM USING THE...

ELECTROPHORETIC PARTICLE, ELECTROPHORETIC PARTICLE DISPERSION LIQUI...

IMAGE DISPLAY DEVICE AND CONTROL METHOD THEREOF

Planar Lightwave Circuit, Design Method for Wave Propagation Circui...

Optical Functional Circuit

Fine Particles and Method of Producing Thereof, Fine Particle Dispe...

Wave transmission medium and waveguide circuit

Information recording/reproduction head

Magnetic disc apparatus and magnetic head in which a recording/repr...

Magnetic disc apparatus, magnetic head, and production methods thereof

Silicone-oil soluble polymer, image display medium using the silico...

Image display medium and image display device using the image displ...