Kiyoshi Hotta

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Fukui, 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
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
Polymer containing lactic acid as its constituting unit and method...
- Patent number 5,714,618
- Issue date Feb 3, 1998
- Toyo Boseki Kabushiki Kaisha
- Kunio Kimura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymer containing lactic acid as its constituting unit and method...
- Patent number 5,618,911
- Issue date Apr 8, 1997
- Toyo Boseki Kabushiki Kaisha
- Kunio Kimura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Aromatic diamine/aromatic dicarboxylate and production method thereof
- Publication number 20010014756
- Publication date Aug 16, 2001
- Kiyoshi Hotta
- C07 - ORGANIC CHEMISTRY