Kazuya TOKUNAGA

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Chiyoda-ku, Tokyo, JP

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Patents Applicationslast 30 patents

Information Patent Application
RAIL AND METHOD FOR PRODUCING THE SAME
- Publication number 20230250505
- Publication date Aug 10, 2023
- JFE STEEL CORPORATION
- Kazuya Tokunaga
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
RAIL AND MANUFACTURING METHOD THEREFOR
- Publication number 20220307101
- Publication date Sep 29, 2022
- JFE STEEL CORPORATION
- Kenji OKUSHIRO
- C21 - METALLURGY OF IRON
Information Patent Application
METHOD FOR MANUFACTURING RAILWAY VEHICLE WHEEL
- Publication number 20190338402
- Publication date Nov 7, 2019
- JFE STEEL CORPORATION
- Tatsumi KIMURA
- B60 - VEHICLES IN GENERAL
Information Patent Application
RAILWAY VEHICLE WHEEL AND METHOD FOR MANUFACTURING RAILWAY VEHICLE...
- Publication number 20170191149
- Publication date Jul 6, 2017
- JFE STEEL CORPORATION
- Tatsumi KIMURA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...