Akio Shiomi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for supplying glass forming raw material
- Patent number 4,894,079
- Issue date Jan 16, 1990
- Sumitomo Electric Industries, Ltd.
- Akio Shiomi
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method for producing glass preform for optical fiber
- Patent number 4,812,154
- Issue date Mar 14, 1989
- Sumitomo Electric Industries, Ltd.
- Kiminobu Yoshida
- C03 - GLASS MINERAL OR SLAG WOOL