Katsuhisa Itoh

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Laser device and light signal amplifying device using the same
- Patent number 6,798,792
- Issue date Sep 28, 2004
- Hoya Corporation
- Katsuhisa Itoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Laser device and an optical signal amplifier using thereof
- Patent number 6,795,460
- Issue date Sep 21, 2004
- Katsuhisa Itoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing optical medium
- Patent number 6,533,883
- Issue date Mar 18, 2003
- Hoya Corporation
- Akiyoshi Tanaka
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for manufacturing glass preform and glass fiber
- Patent number 6,053,012
- Issue date Apr 25, 2000
- Hoya Corporation
- Katsuhisa Itoh
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Etchant and method for etching chalcogenide glass and optical membe...
- Patent number 6,042,739
- Issue date Mar 28, 2000
- Hoya Corporation
- Katsuhisa Itoh
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Drawing a chalcogenide glass fiber in a sulfur atmosphere
- Patent number 5,917,108
- Issue date Jun 29, 1999
- Hoya Corporation
- Katsuhisa Itoh
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fibers and optical fiber amplifiers
- Patent number 5,856,882
- Issue date Jan 5, 1999
- Hoya Corporation
- Hiroaki Yanagita
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Laser glasses and laser glass fibers
- Patent number 5,764,661
- Issue date Jun 9, 1998
- Hoya Corporation
- Hiromasa Tawarayama
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
Laser device and light signal amplifying device using the same
- Publication number 20020001320
- Publication date Jan 3, 2002
- Hoya Corporation
- Katsuhisa Itoh
- H01 - BASIC ELECTRIC ELEMENTS

Katsuhisa Itoh

Person

Patents Grantslast 30 patents

Laser device and light signal amplifying device using the same

Laser device and an optical signal amplifier using thereof

Method of manufacturing optical medium

Method for manufacturing glass preform and glass fiber

Etchant and method for etching chalcogenide glass and optical membe...

Drawing a chalcogenide glass fiber in a sulfur atmosphere

Optical fibers and optical fiber amplifiers

Laser glasses and laser glass fibers

Patents Applicationslast 30 patents

Laser device and light signal amplifying device using the same