Yoshio Yokoyama

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing optical fiber preform
- Patent number 6,889,529
- Issue date May 10, 2005
- Sumitomo Electric Industries, Ltd.
- Toshihiro Ooishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of producing glass particles deposit
- Patent number 6,748,769
- Issue date Jun 15, 2004
- Sumitomo Electric Industries, Ltd.
- Toshihiro Ooishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber and method of making the same
- Patent number 6,697,559
- Issue date Feb 24, 2004
- Sumitomo Electric Industries, Ltd.
- Masaaki Hirano
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber and method of manufacturing the same
- Patent number 6,535,679
- Issue date Mar 18, 2003
- Sumitomo Electric Industries, Ltd.
- Yoshio Yokoyama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber and method of making the same
- Patent number 6,519,403
- Issue date Feb 11, 2003
- Sumitomo Electric Industries, Ltd.
- Masaaki Hirano
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Fiber preform method with a hot drill-in step for a Ge-doped tube a...
- Patent number 6,474,108
- Issue date Nov 5, 2002
- Sumitomo Electric Industries, Ltd.
- Masashi Onishi
- G02 - OPTICS
Information Patent Grant
Dispersion-shifted optical fiber
- Patent number 6,360,046
- Issue date Mar 19, 2002
- Sumitomo Electric Industries, Ltd.
- Eisuke Sasaoka
- G02 - OPTICS
Information Patent Grant
Dispersion-shifted fiber
- Patent number 6,275,638
- Issue date Aug 14, 2001
- Sumitomo Electric Industries, Ltd.
- Eisuke Sasaoka
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical fiber and method of making the same
- Publication number 20030147611
- Publication date Aug 7, 2003
- Sumitomo Electric Industries, Ltd.
- Masaaki Hirano
- G02 - OPTICS
Information Patent Application
Method and device for manufactuirng glass particulate sedimented body
- Publication number 20030003228
- Publication date Jan 2, 2003
- Toshihiro Ooishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Method and apparatus for elongating optical fiber preform
- Publication number 20020139150
- Publication date Oct 3, 2002
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Yoshio Yokoyama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
METHOD OF MANUFACTURING OPTICAL FIBER BASE MATERIAL
- Publication number 20020124602
- Publication date Sep 12, 2002
- MASASHI ONISHI
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Method of manufacturing optical fiber preform
- Publication number 20020073737
- Publication date Jun 20, 2002
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Toshihiro Ooishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Method of producing glass particles deposit
- Publication number 20020062666
- Publication date May 30, 2002
- Toshihiro Ooishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL FIBER AND METHOD OF MANUFACTURING THE SAME
- Publication number 20010043782
- Publication date Nov 22, 2001
- YOSHIO YOKOYAMA
- C03 - GLASS MINERAL OR SLAG WOOL

Yoshio Yokoyama

Person

Patents Grantslast 30 patents

Method of manufacturing optical fiber preform

Method of producing glass particles deposit

Optical fiber and method of making the same

Optical fiber and method of manufacturing the same

Optical fiber and method of making the same

Fiber preform method with a hot drill-in step for a Ge-doped tube a...

Dispersion-shifted optical fiber

Dispersion-shifted fiber

Patents Applicationslast 30 patents

Optical fiber and method of making the same

Method and device for manufactuirng glass particulate sedimented body

Method and apparatus for elongating optical fiber preform

METHOD OF MANUFACTURING OPTICAL FIBER BASE MATERIAL

Method of manufacturing optical fiber preform

Method of producing glass particles deposit

OPTICAL FIBER AND METHOD OF MANUFACTURING THE SAME