| 10900595 |
Threaded joint for oil well tubing |
Takamasa Kawai, Taro Kanayama, Masaki Yoshikawa, Haruhiko Seki, Jun Takano +1 more |
2021-01-26 |
| 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 |
| 10125554 |
Threaded joint for oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +4 more |
2018-11-13 |
| 9982491 |
Threaded joint for oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +1 more |
2018-05-29 |
| 9982815 |
Threaded joint for oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +4 more |
2018-05-29 |
| 9709196 |
Threaded joint for heavy-walled oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +4 more |
2017-07-18 |
| 9657873 |
Threaded joint for pipes |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +2 more |
2017-05-23 |
| 9470345 |
Threaded joint for pipes |
Masaki Yoshikawa, Takuya Nagahama, Hiroshi Chikatsune, Jun Takano, Takamasa Kawai +2 more |
2016-10-18 |
| RE45647 |
Highly compressible iron powder |
Yukiko Ozaki, Naomichi Nakamura |
2015-08-11 |
| 8991875 |
Threaded joint for steel pipes |
Masaki Yoshikawa, Takuya Nagahama, Hiroshi Chikatsune, Jun Takano, Takamasa Kawai +2 more |
2015-03-31 |
| 6638335 |
Highly compressible iron powder |
Yukiko Ozaki, Naomichi Nakamura |
2003-10-28 |