Tazuru Okamoto

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Kyoto-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Extrusion material supply device and optical transmission body manu...
- Patent number 8,945,669
- Issue date Feb 3, 2015
- Sekisui Chemical Co., Ltd.
- Tazuru Okamoto
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical fiber and method for manufacturing same
- Patent number 8,611,714
- Issue date Dec 17, 2013
- Sekisui Chemical Co., Ltd.
- Hirotsugu Yoshida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
GI type optical fiber and method for manufacturing same
- Patent number 8,600,210
- Issue date Dec 3, 2013
- Sekisui Chemical Co., Ltd.
- Hirotsugu Yoshida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME
- Publication number 20120114291
- Publication date May 10, 2012
- Hirotsugu Yoshida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
EXTRUSION MATERIAL SUPPLY DEVICE AND OPTICAL TRANSMISSION BODY MANU...
- Publication number 20120034374
- Publication date Feb 9, 2012
- Keio University
- Tazuru Okamoto
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
GI TYPE OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME
- Publication number 20120027369
- Publication date Feb 2, 2012
- Hirotsugu Yoshida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...