Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5019338 | Alloy for building JP valve | Shinji Oishi, Masahiro Nakagawa, Mototsugu Koyama, Kanichi Tanaka, Kensuke Hidaka | 1991-05-28 |
| 4948559 | Alloy for building up valve | Shinji Oishi, Masahiro Nakagawa, Mototsugu Koyama, Kanichi Tanaka, Kensuke Hidaka | 1990-08-14 |