Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6808103 | Method for continuous high-speed welding of double-ply metal tubes and welding furnace for performing the same | — | 2004-10-26 |
| 5458156 | Stainless steel multifold pipe | Naoto Okubo, Yoshihiro Uematsu, Katsuhisa Miyakusu, Takashi Igawa, Yukio Oda +2 more | 1995-10-17 |