Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7972451 | Pearlitic steel rail excellent in wear resistance and ductility and method for producing same | Masaharu Ueda, Koichiro Matsushita, Kazuo Fujita, Katsuya Iwano, Takashi Morohoshi +1 more | 2011-07-05 |
| 5126295 | Silicon nitride powder, silicon nitride sintered body and processes for their production | Yukihiko Nakajima, Myuki Nakamura, Hideki Hirotsuru | 1992-06-30 |
| 4728189 | Atomic absorption spectrophotometer | Konosuke Oishi, Hideo Yamada, Seigo Kamitake, Masao Hashimoto | 1988-03-01 |
| 4719017 | Method of chromatogram analysis and an apparatus therefor | Yoshimasa Hamano | 1988-01-12 |