Nobuaki KOMATSUBARA

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Chiyoda-ku, Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Seamless steel pipe suitable for use in sour environment
- Patent number 11,905,580
- Issue date Feb 20, 2024
- Nippon Steel Corporation
- Hiroki Kamitani
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel material suitable for use in sour environment
- Patent number 11,891,680
- Issue date Feb 6, 2024
- Nippon Steel Corporation
- Yohei Otome
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
SEAMLESS STEEL PIPE SUITABLE FOR USE IN SOUR ENVIRONMENT
- Publication number 20220186350
- Publication date Jun 16, 2022
- NIPPON STEEL CORPORATION
- Seiya OKADA
- C21 - METALLURGY OF IRON
Information Patent Application
STEEL MATERIAL SUITABLE FOR USE IN SOUR ENVIRONMENT
- Publication number 20220098712
- Publication date Mar 31, 2022
- Hiroki KAMITANI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
STEEL MATERIAL SUITABLE FOR USE IN SOUR ENVIRONMENT
- Publication number 20220042148
- Publication date Feb 10, 2022
- NIPPON STEEL CORPORATION
- Yohei OTOME
- C21 - METALLURGY OF IRON
Information Patent Application
SEAMLESS STEEL PIPE SUITABLE FOR USE IN SOUR ENVIRONMENT
- Publication number 20210317553
- Publication date Oct 14, 2021
- NIPPON STEEL CORPORATION
- Hiroki KAMITANI
- C21 - METALLURGY OF IRON