Fuyuhiko Kubota

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Ohtsu-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for purification of phosphoric acid high purity polyphosphor...
- Patent number 6,861,039
- Issue date Mar 1, 2005
- Toyo Boeski Kabushiki Kaisha
- Kiyoshi Hotta
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Aromatic diamine/aromatic dicarboxylate and production method thereof
- Patent number 6,617,414
- Issue date Sep 9, 2003
- Toyo Boseki Kabushiki Kaisha
- Kiyoshi Hotta
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polybenzazole and fiber thereof
- Patent number 6,335,419
- Issue date Jan 1, 2002
- Toyo Boseki Kabushiki Kaisha
- Go Matsuoka
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Method for producing polybenzazole
- Patent number 6,169,165
- Issue date Jan 2, 2001
- Toyo Boseki Kabushiki Kaisha
- Fuyuhiko Kubota
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for production of polybenzazole
- Patent number 5,919,890
- Issue date Jul 6, 1999
- Toyo Boseki Kabushiki Kaisha
- Kiyoshi Hotta
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of stabilizing 4,6-diaminoresorcinol and salt thereof
- Patent number 5,911,908
- Issue date Jun 15, 1999
- Toyo Boseki Kabushiki Kaisha
- Go Matsuoka
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Process for Production of Polybenzazole Polymer and the Polymer
- Publication number 20080269455
- Publication date Oct 30, 2008
- Toyo Boseki Kabushiki Kaisha
- Naoki Watanabe
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Thermoplastic Resin Composition For Masterbatches, Method Of Produc...
- Publication number 20070194479
- Publication date Aug 23, 2007
- Maki Sato
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Aromatic diamine/aromatic dicarboxylate and production method thereof
- Publication number 20010014756
- Publication date Aug 16, 2001
- Kiyoshi Hotta
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Polybenzazole and fiber thereof
- Publication number 20010003130
- Publication date Jun 7, 2001
- Go Matsuoka
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING