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Ehime, JA
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last 30 patents
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Patent Grant
Novel nitrogen-containing aromatic polymers and process for their p...
Patent number
4,086,209
Issue date
Apr 25, 1978
Teijin Limited
Shigeyoshi Hara
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Aromatic polymers containing a nitrogen-containing ring group, and...
Patent number
4,085,090
Issue date
Apr 18, 1978
Teijin Limited
Shigeyoshi Hara
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Novel aromatic imine polymers and process for the preparation thereof
Patent number
4,069,206
Issue date
Jan 17, 1978
Teijin Limited
Shigeyoshi Hara
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Permselective polymeric membrane prepared from polybenzimidazoles
Patent number
3,951,920
Issue date
Apr 20, 1976
Teijin Limited
Masao Senoo
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...