Title:
油井用電縫鋼管及びその製造方法
Document Type and Number:
Japanese Patent JP6394261
Kind Code:
B2
Inventors:
Takuya Hara
Tsujihara English
Shuji Iwamoto
Tsujihara English
Shuji Iwamoto
Application Number:
JP2014209808A
Publication Date:
September 26, 2018
Filing Date:
October 14, 2014
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
C22C38/00; B21C37/08; B23K13/00; C21D8/02; C21D9/08; C21D9/50; C22C38/14; C22C38/58
Domestic Patent References:
| JP2014009366A | ||||
| JP5255802A | ||||
| JP2011017048A | ||||
| JP2014062309A |
Foreign References:
| WO2013153819A1 | ||||
| US20080289814 | ||||
| US20070267110 | ||||
| US20030136476 | ||||
| US4533405 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Fukuchi Ritsuo
Akio Honda
Nakamura Asayuki
Nagasaka Tomoyasu
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Fukuchi Ritsuo
Akio Honda
Nakamura Asayuki
Nagasaka Tomoyasu