Sachiko Yoneyama

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Negative electrode for secondary battery
- Patent number 5,162,178
- Issue date Nov 10, 1992
- Ricoh Company, Ltd.
- Toshiyuki Ohsawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Secondary battery
- Patent number 5,037,713
- Issue date Aug 6, 1991
- Ricoh Company, Ltd.
- Masaki Yoshino
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrochemical device
- Patent number 5,011,751
- Issue date Apr 30, 1991
- Ricoh Company, Ltd.
- Sachiko Yoneyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Sheet-shaped electrode, method or producing the same, and secondary...
- Patent number 4,999,263
- Issue date Mar 12, 1991
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sheet-shaped electrode, method of producing the same, and secondary...
- Patent number 4,948,685
- Issue date Aug 14, 1990
- Ricoh Company, Ltd.
- Toshiyuki Ohsawa
- G02 - OPTICS