Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12054818 | Duplex stainless steel tube and welded joint | Hiroyuki Hirata, Shohgo AOTA, Takahiro Osuki | 2024-08-06 |
| 9328403 | Ni-based heat resistant alloy | Hiroyuki Semba, Hirokazu Okada, Hiroyuki Hirata, Atsuro Iseda | 2016-05-03 |
| 8852362 | Austenitic stainless steel pipe excellent in steam oxidation resistance and manufacturing method therefor | Yoshitaka Nishiyama, Masahiro Seto, Katsuki TANAKA | 2014-10-07 |
| 8808473 | Austenitic heat resistant alloy | Hiroyuki Hirata, Hirokazu Okada, Hiroyuki Semba, Kazuhiro Ogawa, Atsuro Iseda | 2014-08-19 |
| 8065901 | Mandrel bar for high-alloy rolling, method for surface treating a mandrel bar, method for producing mandrel bar, and method for operating seamless pipe mill | Sumio Iida, Yasuyoshi Hidaka, Koji Nakaike | 2011-11-29 |
| 7662244 | Martensitic stainless steel and method for manufacturing same | Kunio Kondo, Masaaki Igarashi, Yuichi Komizo | 2010-02-16 |
| 4943754 | Color picture tube with flat appearing face plate | Ryoji Hirai, Hiroyuki Ikeda | 1990-07-24 |