Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9725671 | Lubricant film-forming composition and screw joint for steel pipe | Keishi Matsumoto, Kunio Goto | 2017-08-08 |
| 9568126 | Threaded joint for steel pipe | Katsutoshi Sumitani, Kunio Goto | 2017-02-14 |