Kenichi YAKIGAYA

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Chiyoda-ku, Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing sulfonic acid group-containing monomer
- Patent number 11,820,733
- Issue date Nov 21, 2023
- Asahi Kasei Kabushiki Kaisha
- Nobuyuki Uematsu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Vinylsulfonic anhydride, method for producing same, and method for...
- Patent number 11,649,205
- Issue date May 16, 2023
- Asahi Kasei Kabushiki Kaisha
- Nobuyuki Uematsu
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PRODUCTION METHOD OF DICARBOXYLIC ACID COMPOUNDS AND/OR DIAMINE COM...
- Publication number 20250122145
- Publication date Apr 17, 2025
- ASAHI KASEI KABUSHIKI KAISHA
- Masaaki ARAMAKI
- C07 - ORGANIC CHEMISTRY
Information Patent Application
VINYLSULFONIC ANHYDRIDE, METHOD FOR PRODUCING SAME, AND METHOD FOR...
- Publication number 20210269395
- Publication date Sep 2, 2021
- Asahi Kasei Kabushiki Kaisha
- Nobuyuki UEMATSU
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PRODUCING SULFONIC ACID GROUP-CONTAINING MONOMER
- Publication number 20200399210
- Publication date Dec 24, 2020
- ASAHI KASEI KABUSHIKI KAISHA
- Nobuyuki UEMATSU
- C07 - ORGANIC CHEMISTRY