Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5238508 | Ferritic-austenitic duplex stainless steel | Akira Yoshitake, Toshiaki Ishii | 1993-08-24 |
| 4943489 | Composite pipe having excellent corrosion resistance and mechanical properties to withstand high temperatures and high pressures | Akira Yoshitake, Takeshi Torigoe, Shinji Amako | 1990-07-24 |