Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9568126 | Threaded joint for steel pipe | Masayoshi Sasaki, Kunio Goto | 2017-02-14 |
| 9205441 | Coating apparatus for applying a UV curable resin to a threaded end of a steel pipe | Masayoshi Sasaki, Takumi Nakamura, Jun Masubuchi | 2015-12-08 |
| 7823931 | Tubular threaded joint | Takahiro Hamamoto, Masaaki Sugino, Michihiko Iwamoto, Miyuki Yamamoto, Jean-Francois Charvet-Quemin +2 more | 2010-11-02 |
| 6755444 | Slim-type threaded joint for oil well pipes | Jun Maeda, Shigeo Nagasaku | 2004-06-29 |
| 6698802 | Pipe joint | Shigeo Nagasaku, Jun Maeda | 2004-03-02 |