Kazutoshi Tohyama

Person

Nakastugawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Glass material and glass ceramic product
- Patent number 6,689,704
- Issue date Feb 10, 2004
- NGK Insulators, Ltd.
- Takashi Ota
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Thermally fused integral ferrule and its manufacturing method, and...
- Patent number 6,519,406
- Issue date Feb 11, 2003
- NGK Insulators, Ltd.
- Masashi Fukuyama
- G02 - OPTICS
Information Patent Grant
Die and production method thereof, glass substrate and production m...
- Patent number 6,379,777
- Issue date Apr 30, 2002
- NGK Insulators, Ltd.
- Takashi Ota
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Press-forming die for glass elements
- Patent number 6,354,111
- Issue date Mar 12, 2002
- NGK Insulators Ltd.
- Takashi Ota
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Glass substrate and two-stage molding method therefor
- Patent number 6,321,020
- Issue date Nov 20, 2001
- NGK Insulators, Ltd.
- Masashi Fukuyama
- G02 - OPTICS
Information Patent Grant
Press mold for glass substrate
- Patent number 6,223,561
- Issue date May 1, 2001
- NGK Insulators, Ltd.
- Masashi Fukuyama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber array
- Patent number 6,215,945
- Issue date Apr 10, 2001
- NGK Insulators, Ltd.
- Masashi Fukuyama
- G02 - OPTICS
Information Patent Grant
Heat-fused unitary ferrule and method for producing the same
- Patent number 6,103,344
- Issue date Aug 15, 2000
- NGK Insulators, Ltd.
- Takashi Ota
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
Optical fiber array and process for production thereof
- Publication number 20030007770
- Publication date Jan 9, 2003
- NGK Insulators, Ltd.
- Akira Matsumoto
- G02 - OPTICS
Information Patent Application
Substrate having V-shaped grooves having multi-angled V-shaped groo...
- Publication number 20020104331
- Publication date Aug 8, 2002
- NGK Insulators, Ltd.
- Masashi Fukuyama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Glass material, glass ceramic product, and process for producing th...
- Publication number 20020010064
- Publication date Jan 24, 2002
- NGK Insulators, Ltd.
- Takashi Ota
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Press mold
- Publication number 20010029754
- Publication date Oct 18, 2001
- NGK Insulators, Ltd. and NGK Optoceramics Co., Ltd.
- Masashi Fukuyama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Substrate having V-shaped grooves and a manufacturing method theref...
- Publication number 20010021301
- Publication date Sep 13, 2001
- NGK Insulators, Ltd.
- Masashi Fukuyama
- G02 - OPTICS
Information Patent Application
Press mold for glass substrate and method for pressing glass substrate
- Publication number 20010005518
- Publication date Jun 28, 2001
- NGK Insulators, Ltd.
- Masashi Fukuyama
- C03 - GLASS MINERAL OR SLAG WOOL

Kazutoshi Tohyama

Person

Patents Grantslast 30 patents

Glass material and glass ceramic product

Thermally fused integral ferrule and its manufacturing method, and...

Die and production method thereof, glass substrate and production m...

Press-forming die for glass elements

Glass substrate and two-stage molding method therefor

Press mold for glass substrate

Optical fiber array

Heat-fused unitary ferrule and method for producing the same

Patents Applicationslast 30 patents

Optical fiber array and process for production thereof

Substrate having V-shaped grooves having multi-angled V-shaped groo...

Glass material, glass ceramic product, and process for producing th...

Press mold

Substrate having V-shaped grooves and a manufacturing method theref...

Press mold for glass substrate and method for pressing glass substrate