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Legal status
Patent not validated
| (51) | INT.CL. | F16L 15/04 | (2006.01) |
| E21B 17/042 | (2013.01) | ||
| E21B 17/042 | (2006.01) | ||
| F16L 15/06 | (2013.01) | ||
| F16L 15/00 | (2006.01) | ||
| F16L 15/004 | (2013.01) | ||
| F16L 15/06 | (2006.01) |
| (11) | Number of the document | 3604881 |
| (13) | Kind of document | T |
| (96) | European patent application number | 18774281.2 |
| Date of filing the European patent application | 2018-03-02 | |
| (97) | Date of publication of the European application | 2020-02-05 |
| (45) | Date of publication and mention of the grant of the patent | 2022-05-04 |
| (46) | Date of publication of the claims translation |
| (86) | Number | PCT/JP2018/008155 |
| Date | 2018-03-02 |
| (87) | Number | WO 2018/180218 |
| Date | 2018-10-04 |
| (30) | Number | Date | Country code |
| 2017070649 | 2017-03-31 | JP |
| (72) |
IWAMOTO, Michihiko , JP
TAKEDA, Yusuke , JP
KOCHI, Yasuhiro , JP
MARUTA, Satoshi , JP
TOYOTA, Yusuke , JP
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| (73) |
Nippon Steel Corporation ,
6-1, Marunouchi 2-chome
Chiyoda-ku, Tokyo 100-8071,
JP
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| (54) | THREADED CONNECTION FOR STEEL PIPE |
| THREADED CONNECTION FOR STEEL PIPE |