Katsuyuki Imoto

Person

Saitama-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Polymer waveguides and process for producing the same
- Patent number 7,035,518
- Issue date Apr 25, 2006
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Polymer material and polymer film
- Patent number 6,830,818
- Issue date Dec 14, 2004
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method and apparatus for dicing a substrate
- Patent number 5,916,460
- Issue date Jun 29, 1999
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Rare earth element-doped multiple-core optical fiber and optical sy...
- Patent number 5,742,722
- Issue date Apr 21, 1998
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Rare earth element-doped multiple-core optical fiber and method for...
- Patent number 5,712,941
- Issue date Jan 27, 1998
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Rare earth element-doped optical fiber amplifier
- Patent number 5,706,124
- Issue date Jan 6, 1998
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rare earth element-doped multiple-core optical fiber and optical sy...
- Patent number 5,703,987
- Issue date Dec 30, 1997
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Rare earth element-doped multiple-core optical fiber, method for fa...
- Patent number 5,570,448
- Issue date Oct 29, 1996
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Polymer core optical wave-guide and fabrication method thereof
- Patent number 5,497,445
- Issue date Mar 5, 1996
- Hitachi Cable, Inc.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical device with a pig tail optical fiber and its production method
- Patent number 5,475,777
- Issue date Dec 12, 1995
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Rare earth element-doped optical waveguide and process for producin...
- Patent number 5,206,925
- Issue date Apr 27, 1993
- Hitachi Cable Limited
- Masataka Nakazawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical star coupler and method for manufacturing the same
- Patent number 5,190,364
- Issue date Mar 2, 1993
- Hitachi Cable Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical receiving method utilizing polarization diversity and appar...
- Patent number 5,140,453
- Issue date Aug 18, 1992
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical waveguide type star coupler
- Patent number 5,134,672
- Issue date Jul 28, 1992
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical switching system
- Patent number 5,111,323
- Issue date May 5, 1992
- Hitachi, Ltd.
- Toshiki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Waveguide type optical multiplexer/demultiplexer with a wave guide...
- Patent number 4,970,713
- Issue date Nov 13, 1990
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Waveguide type light merging and branching device
- Patent number 4,953,934
- Issue date Sep 4, 1990
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical multi/demultiplexer and optical module using the same
- Patent number 4,909,584
- Issue date Mar 20, 1990
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Waveguide type optical device with thermal compensation layers
- Patent number 4,904,037
- Issue date Feb 27, 1990
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Two-way optical transmission system
- Patent number 4,880,289
- Issue date Nov 14, 1989
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical waveguide device
- Patent number 4,871,221
- Issue date Oct 3, 1989
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method for fabricating the same
- Patent number 4,856,859
- Issue date Aug 15, 1989
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical star coupler and method of manufacturing the same
- Patent number 4,842,359
- Issue date Jun 27, 1989
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical fiber star coupler and method of manufacturing the same
- Patent number 4,822,128
- Issue date Apr 18, 1989
- Hitachi, Ltd.
- Katsuyuki Imoto
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Two-way optical fiber transmission network
- Patent number 4,801,190
- Issue date Jan 31, 1989
- Hitachi, Ltd.
- Katsuyuki Imoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical filter and optical device using same
- Patent number 4,790,614
- Issue date Dec 13, 1988
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical multi/demultiplexer
- Patent number 4,756,587
- Issue date Jul 12, 1988
- Hitachi, Ltd.
- Hirohisa Sano
- G02 - OPTICS
Information Patent Grant
Optical star coupler and method for manufacturing the same
- Patent number 4,726,643
- Issue date Feb 23, 1988
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Optical coupling system with intermediate coupling medium
- Patent number 4,601,535
- Issue date Jul 22, 1986
- Hitachi, Ltd.
- Toshiki Tanaka
- G02 - OPTICS
Information Patent Grant
Method for producing optical fiber preform
- Patent number 4,259,101
- Issue date Mar 31, 1981
- Hitachi, Ltd.
- Yasuo Tsukuda
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
Polymer material and polymer film
- Publication number 20020177660
- Publication date Nov 28, 2002
- HITACHI CABLE, LTD. and NIPPON PAINT CO., LTD.
- Katsuyuki Imoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymer waveguides and process for producing the same
- Publication number 20020150368
- Publication date Oct 17, 2002
- HITACHI CABLE, LTD.
- Katsuyuki Imoto
- G02 - OPTICS

Katsuyuki Imoto

Person

Patents Grantslast 30 patents

Polymer waveguides and process for producing the same

Polymer material and polymer film

Method and apparatus for dicing a substrate

Rare earth element-doped multiple-core optical fiber and optical sy...

Rare earth element-doped multiple-core optical fiber and method for...

Rare earth element-doped optical fiber amplifier

Rare earth element-doped multiple-core optical fiber and optical sy...

Rare earth element-doped multiple-core optical fiber, method for fa...

Polymer core optical wave-guide and fabrication method thereof

Optical device with a pig tail optical fiber and its production method

Rare earth element-doped optical waveguide and process for producin...

Optical star coupler and method for manufacturing the same

Optical receiving method utilizing polarization diversity and appar...

Optical waveguide type star coupler

Optical switching system

Waveguide type optical multiplexer/demultiplexer with a wave guide...

Waveguide type light merging and branching device

Optical multi/demultiplexer and optical module using the same

Waveguide type optical device with thermal compensation layers

Two-way optical transmission system

Optical waveguide device

Optical waveguide and method for fabricating the same

Optical star coupler and method of manufacturing the same

Optical fiber star coupler and method of manufacturing the same

Two-way optical fiber transmission network

Optical filter and optical device using same

Optical multi/demultiplexer

Optical star coupler and method for manufacturing the same

Optical coupling system with intermediate coupling medium

Method for producing optical fiber preform

Patents Applicationslast 30 patents

Polymer material and polymer film

Polymer waveguides and process for producing the same