Akira Ueno

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process of making a PTC composition by grafting method using two di...
- Patent number 5,190,697
- Issue date Mar 2, 1993
- Daito Communication Apparatus Co.
- Kumakazu Ohkita
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
PTC compositions
- Patent number 5,171,774
- Issue date Dec 15, 1992
- Daito Communication Apparatus Co. Ltd.
- Akira Ueno
- C01 - INORGANIC CHEMISTRY