Yamamoto; Takakazu

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electrochromic copolymers including vinyl alcohol or vinyl acetate...
- Patent number 5,561,206
- Issue date Oct 1, 1996
- Yoshida Kogyo K. K.
- Takakazu Yamamoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
EL element using polythiophene
- Patent number 5,540,999
- Issue date Jul 30, 1996
- Yamamoto; Takakazu
- Takakazu Yamamoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Sulfuric acid concentration sensor and lead acid battery equipped w...
- Patent number 5,273,841
- Issue date Dec 28, 1993
- Yuasa Battery Co., Ltd.
- Takakazu Yamamoto
- G01 - MEASURING TESTING

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