Tadayuki Imai

Person

Zama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Laser processing device
- Patent number 11,958,129
- Issue date Apr 16, 2024
- Nippon Telegraph and Telephone Corporation
- Sohan Kawamura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Light deflector
- Patent number 11,422,428
- Issue date Aug 23, 2022
- Nippon Telegraph and Telephone Corporation
- Takashi Sakamoto
- G02 - OPTICS
Information Patent Grant
Wavelength swept light source
- Patent number 9,372,339
- Issue date Jun 21, 2016
- Nippon Telegraph and Telephone Communications
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Variable focusing lens and microscope
- Patent number 8,773,749
- Issue date Jul 8, 2014
- Nippon Telegraph and Telephone Corporation
- Tadayuki Imai
- G02 - OPTICS
Information Patent Grant
Electrooptic device
- Patent number 8,654,167
- Issue date Feb 18, 2014
- Nippon Telegraph and Telephone Corporation
- Kouichirou Nakamura
- G02 - OPTICS
Information Patent Grant
Electrooptic device
- Patent number 8,648,893
- Issue date Feb 11, 2014
- Nippon Telegraph and Telephone Corporation
- Kouichirou Nakamura
- G02 - OPTICS
Information Patent Grant
Variable-focal length lens
- Patent number 8,014,061
- Issue date Sep 6, 2011
- Nippon Telegraph and Telephone Corporation
- Tadayuki Imai
- G02 - OPTICS
Information Patent Grant
Electrooptic device
- Patent number 7,764,302
- Issue date Jul 27, 2010
- Nippon Telegraph and Telephone Corporation
- Kouichirou Nakamura
- G02 - OPTICS
Information Patent Grant
Optical medium, an optical lens and a prism
- Patent number 7,674,737
- Issue date Mar 9, 2010
- Nippon Telegraph and Telephone Corporation
- Kazuo Fujiura
- G02 - OPTICS
Information Patent Grant
Method and apparatus for producing crystals
- Patent number 7,591,895
- Issue date Sep 22, 2009
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Multi-layered holographic read-only memory and data retrieval method
- Patent number 7,570,567
- Issue date Aug 4, 2009
- Nippon Telegraph and Telephone
- Shougo Yagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory reproduction apparatus and incidence positioning met...
- Patent number 7,505,644
- Issue date Mar 17, 2009
- Nippon Telephone and Telegraph Corporation
- Yoshiaki Kurokawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,492,975
- Issue date Feb 17, 2009
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,356,227
- Issue date Apr 8, 2008
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Optical waveguide material and optical waveguide
- Patent number 7,340,147
- Issue date Mar 4, 2008
- Nippon Telegraph and Telephone Corporation
- Tadayuki Imai
- G02 - OPTICS
Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,340,116
- Issue date Mar 4, 2008
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,336,854
- Issue date Feb 26, 2008
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Optical waveguide material and optical waveguide
- Patent number 7,177,514
- Issue date Feb 13, 2007
- Nippon Telegraph and Telephone Corporation
- Tadayuki Imai
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method of manufacture
- Patent number 7,110,652
- Issue date Sep 19, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method of manufacture
- Patent number 6,996,321
- Issue date Feb 7, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Grant
Multi-layered holographic read-only memory and data retrieval method
- Patent number 6,811,728
- Issue date Nov 2, 2004
- Nippon Telegraph and Telephone Corporation
- Shougo Yagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Wavelength converter
- Patent number 6,795,232
- Issue date Sep 21, 2004
- Nippon Telegraph and Telephone Corporation
- Kazuo Fujiura
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method of manufacture
- Patent number 6,792,189
- Issue date Sep 14, 2004
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Grant
Read-only laminated information recording medium and manufacturing...
- Patent number 6,654,532
- Issue date Nov 25, 2003
- Nippon Telegraph and Telephone Corporation
- Satoru Tomaru
- G11 - INFORMATION STORAGE
Information Patent Grant
Multi-layered holographic read-only memory and data retrieval method
- Patent number 6,556,531
- Issue date Apr 29, 2003
- Nippon Telegraph and Telephone Corporation
- Shougo Yagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for three-dimensional holographic display suit...
- Patent number 6,281,994
- Issue date Aug 28, 2001
- Nippon Telegraph and Telephone Corporation
- Tsutomu Horikoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Laser Processing Device
- Publication number 20210276122
- Publication date Sep 9, 2021
- Nippon Telegraph and Telephone Corporation
- Sohan Kawamura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Laser Processing Device
- Publication number 20210260693
- Publication date Aug 26, 2021
- Nippon Telegraph and Telephone Corporation
- Sohan Kawamura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Light Deflector
- Publication number 20210247660
- Publication date Aug 12, 2021
- Nippon Telegraph and Telephone Corporation
- Takashi Sakamoto
- G02 - OPTICS
Information Patent Application
WAVELENGTH SWEPT LIGHT SOURCE
- Publication number 20130286454
- Publication date Oct 31, 2013
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
ELECTROOPTIC DEVICE
- Publication number 20120182600
- Publication date Jul 19, 2012
- Nippon Telegraph and Telephone Corporation
- Kouichirou Nakamura
- G02 - OPTICS
Information Patent Application
VARIABLE FOCUSING LENS AND MICROSCOPE
- Publication number 20120075694
- Publication date Mar 29, 2012
- Nippon Telegraph and Telephone Corporation
- Tadayuki Imai
- G02 - OPTICS
Information Patent Application
VARIABLE-FOCAL LENGTH LENS
- Publication number 20100290104
- Publication date Nov 18, 2010
- Nippon Telegraph and Telephone Corporation
- Tadayuki Imai
- G02 - OPTICS
Information Patent Application
ELECTROOPTIC DEVICE
- Publication number 20100253996
- Publication date Oct 7, 2010
- Nippon Telegraph and Telephone Corporation
- Kouichirou Nakamura
- G02 - OPTICS
Information Patent Application
ELECTROOPTIC DEVICE
- Publication number 20090219378
- Publication date Sep 3, 2009
- Nippon Telegraph and Telephone Corporation
- Kouichirou Nakamura
- G02 - OPTICS
Information Patent Application
Method and Apparatus for Preparing Crystal
- Publication number 20080271666
- Publication date Nov 6, 2008
- Masahiro Sasaura
- C30 - CRYSTAL GROWTH
Information Patent Application
OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER
- Publication number 20070253659
- Publication date Nov 1, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
Optical Medium, An Optical Lens And A Prism
- Publication number 20070199505
- Publication date Aug 30, 2007
- Nippon Telegraph and Telephone Corporation
- Kazuo Fujiura
- C30 - CRYSTAL GROWTH
Information Patent Application
Optical memory reproduction apparatus and incidence positioning met...
- Publication number 20070147749
- Publication date Jun 28, 2007
- NTT Intellectual Property Center
- Yoshiaki Kurokawa
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER
- Publication number 20070092181
- Publication date Apr 26, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER
- Publication number 20070086691
- Publication date Apr 19, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
Optical switch, optical modulator and variable wavelength filter
- Publication number 20070058896
- Publication date Mar 15, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
Variable wavelength optical filter
- Publication number 20060228089
- Publication date Oct 12, 2006
- Makoto Shimokozono
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE MATERIAL AND OPTICAL WAVEGUIDE
- Publication number 20060215981
- Publication date Sep 28, 2006
- Nippon Telegraph and Telephone Corporation
- Tadayuki Imai
- C30 - CRYSTAL GROWTH
Information Patent Application
Optical waveguide material and optical waveguide
- Publication number 20060051041
- Publication date Mar 9, 2006
- Tadayuki Imai
- C30 - CRYSTAL GROWTH
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20060018616
- Publication date Jan 26, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20060018617
- Publication date Jan 26, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Multi-layered holographic read-only memory and data retrieval method
- Publication number 20050041557
- Publication date Feb 24, 2005
- Shougo Yagi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20050008318
- Publication date Jan 13, 2005
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Multi-layered holographic read-only memory and data retrieval method
- Publication number 20030161247
- Publication date Aug 28, 2003
- Nippon Telegraph and Telephone Corporation
- Shougo Yagi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20030072550
- Publication date Apr 17, 2003
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Wavelength converter
- Publication number 20020141040
- Publication date Oct 3, 2002
- Kazuo Fujiura
- G02 - OPTICS
Information Patent Application
OPTICAL MATERIALS
- Publication number 20020098418
- Publication date Jul 25, 2002
- SHOGO YAGI
- G02 - OPTICS

Tadayuki Imai

Person

Patents Grantslast 30 patents

Laser processing device

Light deflector

Wavelength swept light source

Variable focusing lens and microscope

Electrooptic device

Electrooptic device

Variable-focal length lens

Electrooptic device

Optical medium, an optical lens and a prism

Method and apparatus for producing crystals

Multi-layered holographic read-only memory and data retrieval method

Optical memory reproduction apparatus and incidence positioning met...

Optical switch, optical modulator and wavelength variable filter

Optical switch, optical modulator and wavelength variable filter

Optical waveguide material and optical waveguide

Optical switch, optical modulator and wavelength variable filter

Optical switch, optical modulator and wavelength variable filter

Optical waveguide material and optical waveguide

Optical waveguide and method of manufacture

Optical waveguide and method of manufacture

Multi-layered holographic read-only memory and data retrieval method

Wavelength converter

Optical waveguide and method of manufacture

Read-only laminated information recording medium and manufacturing...

Multi-layered holographic read-only memory and data retrieval method

Method and apparatus for three-dimensional holographic display suit...

Patents Applicationslast 30 patents

Laser Processing Device

Laser Processing Device

Light Deflector

WAVELENGTH SWEPT LIGHT SOURCE

ELECTROOPTIC DEVICE

VARIABLE FOCUSING LENS AND MICROSCOPE

VARIABLE-FOCAL LENGTH LENS

ELECTROOPTIC DEVICE

ELECTROOPTIC DEVICE

Method and Apparatus for Preparing Crystal

OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER

Optical Medium, An Optical Lens And A Prism

Optical memory reproduction apparatus and incidence positioning met...

OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER

OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER

Optical switch, optical modulator and variable wavelength filter

Variable wavelength optical filter

OPTICAL WAVEGUIDE MATERIAL AND OPTICAL WAVEGUIDE

Optical waveguide material and optical waveguide

Optical waveguide and method of manufacture

Optical waveguide and method of manufacture

Multi-layered holographic read-only memory and data retrieval method

Optical waveguide and method of manufacture

Multi-layered holographic read-only memory and data retrieval method

Optical waveguide and method of manufacture

Wavelength converter

OPTICAL MATERIALS