Noritoshi Ishida

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Ohmuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of methylene-crosslinked polyphenylene p...
- Patent number 5,364,958
- Issue date Nov 15, 1994
- Mitsui Toatsu Chemicals, Incorporated
- Noritoshi Ishida
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fractionation process of reaction mixture containing methylene brid...
- Patent number 5,179,227
- Issue date Jan 12, 1993
- Mitsui Toatsu Chemicals Inc.
- Noritoshi Ishida
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Methylene-crosslinked polyarylamine and process for preparing same
- Patent number 5,053,539
- Issue date Oct 1, 1991
- Mitsui Toatsu Chemicals, Incorporated
- Naoyuki Yano
- C07 - ORGANIC CHEMISTRY