| 申请人 |
NIPPON OIL CO., LTD., TOKIO/TOKYO, JP;MITSUBISHI MATERIALS CORP., TOKIO/TOKYO, JP |
发明人 |
SANO, AKIRA, KAWASAKI-SHI KANAGAWA-KEN, JP;YOSHIZUMI, MOTOHIKO MITSUBISHI METAL CORPORATION, OMIYA-SHI SAITAMA-KEN, JP;HIRATA, HIROKI C/O MITSUBISHI METAL CORPORATION, OMIYA-SHI SAITAMA-KEN, JP;MATSUURA, KAZUO, TOKYO, JP;SUYAMA, HISAHIKO, YOKOHAMA-SHI KANAGAWA-KEN, JP |
