Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10100383 | Martensitic steel and method for producing same | Toshihiro Hanamura | 2018-10-16 |
| 9366211 | Orifice plate and manufacturing method of the orifice plate | Eijiro Muramatsu, Takafumi Komatsu, Hitoshi Kobayashi, Shin-ichi Nagayama, Mitsuyuki Tanaka | 2016-06-14 |
| 8070888 | High strength formed article comprising hyperfine grain structure steel and manufacturing method of the same | Eijrio Muramatsu, Kotobu Nagai | 2011-12-06 |
| 7727343 | Controlled warm-rolling method | Kotobu Nagai | 2010-06-01 |
| 7647804 | Large strain-introducing working method and caliber rolling device | Tadanobu Inoue, Eijiro Muramatsu, Kotobu Nagai | 2010-01-19 |
| 6572716 | Fine ferrite-based structure steel production method | Tohru Hayashi, Kaneaki Tsuzaki, Kotobu Nagai, Osamu Umezawa | 2003-06-03 |
| 6464807 | Production method of ultra fine grain steel | Osamu Umezawa, Kaneaki Tsuzaki, Kotobu Nagai | 2002-10-15 |
| 6287397 | High strength phosphorus-containing steel and method for producing the same | Toshihiro Hanamura, Hiroshi Nakajima, Kaneaki Tsuzaki, Kotobu Nagai | 2001-09-11 |
| 6221178 | Ultra-fine grain steel and method for producing it | Kaneaki Tsuzaki, Kotobu Nagai, Osamu Umezawa | 2001-04-24 |
| 6129791 | Oxides dispersion steel and making process thereof | Hiroshi Nakajima, Kaneaki Tsuzaki, Kotobu Nagai | 2000-10-10 |
| 4933308 | High strength high toughness TiB.sub.2 ceramics | Hiroaki Nishio | 1990-06-12 |