Masataka Nakazawa

Person

Mito, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of making phase mask for machining optical fiber and optical...
- Patent number 6,795,614
- Issue date Sep 21, 2004
- Dai Nippon Printing Co., Ltd.
- Toshikazu Segawa
- G02 - OPTICS
Information Patent Grant
Wavelength-tunable mode-locked laser, wavelength converter and tran...
- Patent number 6,631,145
- Issue date Oct 7, 2003
- Nippon Telegraph and Telephone Corporation
- Kohichi Robert Tamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of producing phase mask for fabricating optical fiber and op...
- Patent number 6,466,714
- Issue date Oct 15, 2002
- Dai Nippon Printing Co., Ltd. and Nippon Telegraph and Telephone Corporation
- Masaaki Kurihara
- G02 - OPTICS
Information Patent Grant
Atomic frequency standard laser pulse oscillator
- Patent number 6,333,942
- Issue date Dec 25, 2001
- Nippon Telegraph and Telephone Corporation
- Masataka Nakazawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical pulse generator
- Patent number 6,108,465
- Issue date Aug 22, 2000
- Ando Electric Co., Ltd.
- Rikihiro Iida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical pulse generator
- Patent number 6,101,021
- Issue date Aug 8, 2000
- Ando Electric Co., Ltd.
- Yoshihiro Kumagai
- G02 - OPTICS
Information Patent Grant
Laser pulse oscillator
- Patent number 5,926,492
- Issue date Jul 20, 1999
- Nippon Telegraph & Telephone Corporation
- Eiji Yoshida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Lead-containing fluoride glass, optical fiber and process for produ...
- Patent number 5,695,880
- Issue date Dec 9, 1997
- Sumitomo Electric Industries, Ltd.
- Takashi Kogo
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical pulse compression device
- Patent number 5,583,959
- Issue date Dec 10, 1996
- Nippon Telegraph & Telephone Corporation
- Masataka Nakazawa
- G02 - OPTICS
Information Patent Grant
Lead-containing fluoride glass, optical fiber and process for produ...
- Patent number 5,432,131
- Issue date Jul 11, 1995
- Sumitomo Electric Industtries, Ltd.
- Takashi Kogo
- C03 - GLASS MINERAL OR SLAG WOOL
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 waveguide type star coupler
- Patent number 5,134,672
- Issue date Jul 28, 1992
- Hitachi Cable, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
SEMICONDUCTOR LASER DEVICE
- Publication number 20180269659
- Publication date Sep 20, 2018
- Nippon Telegraph and Telephone Corporation
- Hiroyuki Ishii
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method of manufacturing photonic crystal fiber
- Publication number 20030056550
- Publication date Mar 27, 2003
- Masatoshi Tanaka
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Method of making phase mask for machining optical fiber and optical...
- Publication number 20030006212
- Publication date Jan 9, 2003
- Toshikazu Segawa
- G02 - OPTICS

Masataka Nakazawa

Person

Patents Grantslast 30 patents

Method of making phase mask for machining optical fiber and optical...

Wavelength-tunable mode-locked laser, wavelength converter and tran...

Method of producing phase mask for fabricating optical fiber and op...

Atomic frequency standard laser pulse oscillator

Optical pulse generator

Optical pulse generator

Laser pulse oscillator

Lead-containing fluoride glass, optical fiber and process for produ...

Optical pulse compression device

Lead-containing fluoride glass, optical fiber and process for produ...

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

Optical waveguide type star coupler

Patents Applicationslast 30 patents

SEMICONDUCTOR LASER DEVICE

Method of manufacturing photonic crystal fiber

Method of making phase mask for machining optical fiber and optical...