Hisao Yatsuda

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Sagamihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Low alpha-ray level glass and method for manufacturing the same
- Patent number 5,942,793
- Issue date Aug 24, 1999
- Kabushiki Kaisya Ohara
- Tatsuya Senoo
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Low expansion transparent crystallized glass-ceramic
- Patent number 5,336,643
- Issue date Aug 9, 1994
- Kabushiki Kaisha Ohara
- Naoyuki Goto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
High dispersion optical glass
- Patent number 5,332,700
- Issue date Jul 26, 1994
- Kabushiki Kaisha Ohara
- Katsuhiko Yamaguchi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Glass for a photomask
- Patent number 4,501,819
- Issue date Feb 26, 1985
- Kabushiki Kaisha Ohara Kogaku Garasu Seizosho
- Hisao Yatsuda
- C03 - GLASS MINERAL OR SLAG WOOL