| 12312552 |
Agent for forming solid lubricating coating film, oil country tubular goods, threaded joint for oil country tubular goods, and method for manufacturing oil country tubular goods |
Yasuhide Ishiguro, Seigo Goto, Takashi Koga, Seiji Ozaki, Hideo Sato +6 more |
2025-05-27 |
| 11905765 |
Threaded joint for pipes |
Jun Takano, Takuya Nagahama, Seigo Goto, Masaki Yoshikawa, Tsuyoshi Yoneyama |
2024-02-20 |
| 11549620 |
Screw joint for oil well pipe |
Masaki Yoshikawa, Jun Takano, Takuya Nagahama, Haruhiko Seki |
2023-01-10 |
| 11353144 |
Threaded joint |
Taro Kanayama, Masaki Yoshikawa, Tsuyoshi Yoneyama, Seigo Goto |
2022-06-07 |
| 11053749 |
Threaded joint for oil well steel pipe |
Taro Kanayama, Masaki Yoshikawa, Jun Takano, Takuya Nagahama |
2021-07-06 |
| 10900595 |
Threaded joint for oil well tubing |
Taro Kanayama, Masaki Yoshikawa, Haruhiko Seki, Masateru Ueta, Jun Takano +1 more |
2021-01-26 |
| 10711533 |
Threaded pipe joint |
Masaki Yoshikawa, Kazunari Takahashi, Taro Kanayama, Jun Takano, Tsuyoshi Yoneyama |
2020-07-14 |
| 10443765 |
Threaded joint for pipes |
Takuya Nagahama, Hiroshi Chikatsune, Kazunari Takahashi, Masaki Yoshikawa, Jun Takano +1 more |
2019-10-15 |
| 10295091 |
Threaded joint for tube |
Masaki Yoshikawa, Hiroshi Chikatsune, Kazunari Takahashi, Takuya Nagahama, Jun Takano +1 more |
2019-05-21 |
| 10202809 |
Threaded joint for steel pipes |
Takuya Nagahama, Osamu Sonobe, Masaki Yoshikawa, Jun Takano |
2019-02-12 |
| 10125554 |
Threaded joint for oil country tubular goods |
Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano, Takuya Nagahama +4 more |
2018-11-13 |
| 9982815 |
Threaded joint for oil country tubular goods |
Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano, Takuya Nagahama +4 more |
2018-05-29 |
| 9982491 |
Threaded joint for oil country tubular goods |
Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano, Takuya Nagahama +1 more |
2018-05-29 |
| 9709196 |
Threaded joint for heavy-walled oil country tubular goods |
Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano, Takuya Nagahama +4 more |
2017-07-18 |
| 9657873 |
Threaded joint for pipes |
Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano, Takuya Nagahama +2 more |
2017-05-23 |
| 9470345 |
Threaded joint for pipes |
Masaki Yoshikawa, Takuya Nagahama, Hiroshi Chikatsune, Jun Takano, Masateru Ueta +2 more |
2016-10-18 |
| 9194190 |
Threaded joint for pipe |
Osamu Sonobe, Takuya Nagahama, Masaki Yoshikawa, Jun Takano, Kazunari Takahashi |
2015-11-24 |
| 8991875 |
Threaded joint for steel pipes |
Masaki Yoshikawa, Takuya Nagahama, Hiroshi Chikatsune, Jun Takano, Kazunari Takahashi +2 more |
2015-03-31 |
| 8322178 |
Method for performing temper rolling on steel strip and method for manufacturing high tensile-strength cold rolled steel sheet |
Yukio Kimura |
2012-12-04 |