Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5031434 | Plug for manufacturing seamless steel pipe | Akira Takase, Takashi Tamura, Tsuneo Oikawa, Yutaka Mihara, Takeshi Kuwano | 1991-07-16 |
| 5030367 | Water-dispersion lubricant of graphite, particulate resin and high molecular weight polybasic acid salt | Megumu Tanaka, Koji Sakura, Tatsuharu Oda, Yasuhiro Sotani, Fuyuhiko Kajiyama +4 more | 1991-07-09 |