Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7219524 | Method for manufacturing high-pressure piping part and structure thereof | Masami Tanaka, Toshihiro Imai, Hirofumi Muranaka | 2007-05-22 |
| 6419770 | Cold-warm working and heat treatment method of high carbon-high alloy group steel | Masami Tanaka, Saburo Sugiura, Yoshitaka Nishizawa | 2002-07-16 |