Yoshinori Koyanagi

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Tochigi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Raw batches for ceramic substrates, substrates produced from the ra...
- Patent number 5,212,121
- Issue date May 18, 1993
- Mitsui Mining Company, Limited
- Takahisa Omata
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Glass-ceramic product and method of making the same
- Patent number 4,777,151
- Issue date Oct 11, 1988
- Mitsui Mining Company, Limited
- Keiichiro Koba
- C03 - GLASS MINERAL OR SLAG WOOL