Eishi Tanaka

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Kamakura, JP

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Patents Grantslast 30 patents

Information Patent Grant
P-amino substituted tetraphenylthiophenes and electrophotographic p...
- Patent number 5,023,343
- Issue date Jun 11, 1991
- Mitsui Toatsu Chemicals, Incorporated
- Eishi Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
P-amino substituted tetraphenylthiophenes and electrophotographic p...
- Patent number 4,963,449
- Issue date Oct 16, 1990
- Mitsui Toatsu Chemicals, Incorporated
- Eishi Tanaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Temperature history indicator and its manufacturing method
- Patent number 4,931,420
- Issue date Jun 5, 1990
- Mitsui Toatsu Chemicals, Inc.
- Makoto Asano
- G01 - MEASURING TESTING
Information Patent Grant
Novel benzoquinone derivatives and production process thereof as we...
- Patent number 4,735,744
- Issue date Apr 5, 1988
- Mitsui Toatsu Chemicals, Incorporated
- Michihiro Tsujimoto
- C07 - ORGANIC CHEMISTRY