Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5772956 | High strength, ferritic heat-resistant steel having improved resistance to intermetallic compound precipitation-induced embrittlement | Yasushi Hasegawa, Masahiro Ohgami | 1998-06-30 |
| 5766376 | High-strength ferritic heat-resistant steel and method of producing the same | Yasushi Hasegawa, Takashi Sato, Kohji Tamura, Toshio Fujita | 1998-06-16 |
| 5759300 | Liquid-phase diffusion bonding alloy foils for joining heat-resistant metals in oxidizing atmospheres | Yasushi Hasegawa, Yuuichi Satoh, Hiroshi Ukeba | 1998-06-02 |
| 5683822 | Liquid-phase diffusion bonding alloy foils for joining heat-resistant metals in oxidizing atmospheres | Yasushi Hasegawa, Yuuichi Satoh, Hiroshi Ukeba | 1997-11-04 |
| 5650024 | Martensitic heat-resisting steel excellent in HAZ-softening resistance and process for producing the same | Yasushi Hasegawa, Masahiro Ohgami, Nobuo Mizuhashi, Toshio Fujita | 1997-07-22 |
| 5339868 | Bent pipe having sectional form of high strength | Yasusuke Inoue, Tetsuo Nagasaka, Yoichi Matsubara, Masaaki Takagishi, Seiichi Akizawa | 1994-08-23 |
| 5268142 | High-nitrogen ferritic heat-resisting steel with high vanadium content and method of production thereof | Yasushi Hasegawa, Masahiro Ohgami, Shuichi Funaki, Fujimitsu Masuyama | 1993-12-07 |
| 5254307 | High-nitrogen ferritic heat-resisting steel with high niobium content and method of production thereof | Yasushi Hasegawa, Masahiro Ohgami, Fujimitsu Masuyama | 1993-10-19 |