Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12234535 | Weathering steel for solid-state welding, weathering steel material for solid-state welding, solid-state welded structure and solid-state welding method | Hidetoshi Fujii, Tomoya Nagira, Yoshiaki Morisada | 2025-02-25 |
| 6368380 | Method of melt-removing impurity elements from iron | Yoshiyuki Ueshima | 2002-04-09 |
| 5855696 | Ultra low carbon, cold rolled steel sheet and galvanized steel sheet having improved fatigue properties and processes for producing the same | Makoto Tezuka, Shiro Fujii, Atsushi Itami, Yasuharu Sakuma, Tatsuo Yokoi | 1999-01-05 |
| 5690755 | Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet having excellent bake hardenability, non-aging properties at room temperature and good formability and process for producing the same | Naoki Yoshinaga, Osamu Akisue, Yoshikazu Matsumura, Kunio Nishimura | 1997-11-25 |
| 5486241 | Non-aging at room temperature ferritic single-phase cold-rolled steel sheet and hot-dip galvanized steel sheet for deep drawing having excellent fabrication embrittlement resistance and paint-bake hardenability and process for producing the same | Naoki Yoshinaga, Yoshikazu Matsumura, Osamu Akisue, Kunio Nishimura, Hidekuni Murakami | 1996-01-23 |
| 5470403 | Cold rolled steel sheet and hot dip zinc-coated cold rolled steel sheet having excellent bake hardenability, non-aging properties and formability, and process for producing same | Naoki Yoshinaga, Osamu Akisue, Kunio Nishimura | 1995-11-28 |
| 5384206 | High-strength cold-rolled steel strip and molten zinc-plated high-strength cold-rolled steel strip having good formability and method of producing such strips | Naoki Yoshinaga, Osamu Akisue | 1995-01-24 |
| 5074924 | Process for producing galvanized, non-aging cold rolled steel sheets having good formability in a continuous galvanizing line | Osamu Akisue, Naoki Yoshinaga, Tomohisa Katayama, Masakazu Oshimi | 1991-12-24 |