Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6576584 | Method for producing hydrotreating catalyst | Masahiko Iijima, Takao Hashimoto, Takeshi Isoda | 2003-06-10 |
| 6436870 | Hydrotreating catalyst for hydrotreating hydrocarbon oils | Masahiko Iijima, Takao Hashimoto, Takeshi Isoda | 2002-08-20 |
| 6267874 | Hydrotreating catalyst and processes for hydrotreating hydrocarbon oil with the same | Masahiko Iijima | 2001-07-31 |
| 4742012 | Method of making graded junction containing amorphous semiconductor device | Mitsuo Matsumura, Hideo Yamamoto, Keitaro Fukui, Toshihiro Yoshida, Kunio Asai +1 more | 1988-05-03 |
| 4738729 | Amorphous silicon semiconductor solar cell | Toshihiko Yoshida, Mitsuo Matsumura, Hideo Yamamoto, Kunio Asai, Osamu Nakamura | 1988-04-19 |