Research Association for Synthetic Fiber Technology

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing polyesters using a niobium compound as a cata...
- Patent number 4,818,808
- Issue date Apr 4, 1989
- Kanebo, Ltd.
- Toshihiro Kushimoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polyester
- Patent number 4,612,363
- Issue date Sep 16, 1986
- Mitsubishi Rayon Co., Ltd.
- Isao Sasaki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...