NOBUYUKI HIRANO

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YOKOHAMA-SHI, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of production of porous glass base material for optical fibe...
- Patent number 6,449,986
- Issue date Sep 17, 2002
- Sumitomo Electric Industries, Ltd.
- Takashi Sugiyama
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF PRODUCTION OF POROUS GLASS BASE MATERIAL FOR OPTICAL FIBER
- Publication number 20010047666
- Publication date Dec 6, 2001
- TAKASHI SUGIYAMA
- C03 - GLASS MINERAL OR SLAG WOOL