Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7422907 | Process for measuring mercury concentration within hydrocarbons | Hitomi Hirano, Shinichi Okada, Naohide Tsuzuki | 2008-09-09 |
| 5171724 | Magnesia-alumina type spinel clinker and method of producing refractory by using same | Hitoshi Iwadoh, Takenao Hisamoto, Katsunori Itoh, Mitsuteru Takemoto | 1992-12-15 |
| 4340360 | Fire brick for a rotary kiln | Fritz Hoedl, Morihiro Kimura | 1982-07-20 |