申请人 |
NIPPON STEEL CORP., TOKIO/TOKYO, JP;DAI-ICHI HIGH FREQUENCY CO., LTD., TOKYO, JP;JGC CORP., TOKIO/TOKYO, JP |
发明人 |
NAOI, H. NIPPON STEEL CORP., R&D LABORATORIES-II, KANAGAWA 229, JP;INOUE, Y. NIPPON STEEL CORP., R&D LABORATORIES-II, KANAGAWA 229, JP;NAGASAKA, TETSUO NIPPON STEEL CORPORATION, TOKYO 100-71, JP;MATSUBARA, Y. DAI-ICHI HIGH FREQUENCY CO., LTD, KAWASAKI-SHI KANAGAWA 210, JP;TAKAGISHI, M. DAI-ICHI HIGH FREQUENCY CO., LTD, KAWASAKI-SHI KANAGAWA 210, JP;AKIZAWA, SEIICHI, KANAGAWA 232, JP |