Toichi Sakata

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of high molecular weight polyamide-imide...
- Patent number 5,047,499
- Issue date Sep 10, 1991
- Hitachi Chemical Co., Ltd.
- Toichi Sakata
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Solvent-soluble polyimide and production thereof
- Patent number 4,954,612
- Issue date Sep 4, 1990
- Hitachi Chemical Co., Ltd.
- Yoshihiro Nomura
- C07 - ORGANIC CHEMISTRY