Takao HIRAMA

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Yokohama-shi, Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polyethylene resin for use in spacer for optical fiber cable and sp...
- Patent number 11,029,478
- Issue date Jun 8, 2021
- Sumitomo Electric Industries, Ltd.
- Ryoei Oka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical fiber cable
- Patent number 11,029,477
- Issue date Jun 8, 2021
- Sumitomo Electric Industries, Ltd.
- Fumiaki Sato
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
SLOT TYPE OPTICAL FIBER CABLE
- Publication number 20240241334
- Publication date Jul 18, 2024
- Sumitomo Electric Industries, Ltd.
- Fumiaki SATO
- G02 - OPTICS
Information Patent Application
POLYETHYLENE RESIN FOR USE IN SPACER FOR OPTICAL FIBER CABLE AND SP...
- Publication number 20200292772
- Publication date Sep 17, 2020
- Sumitomo Electric Industries, Ltd.
- Ryoei OKA
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
OPTICAL FIBER CABLE
- Publication number 20200041739
- Publication date Feb 6, 2020
- Sumitomo Electric Industries, Ltd.
- Fumiaki SATO
- G02 - OPTICS