Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672874 | Infrared oil-concentration meter | Hiroshi Fujii, Tatsuhide Tsutsui, Masahiko Ishida, Shuzi Takada | 1997-09-30 |
| 5444379 | Electric conductivity measuring cell | Tadahiro Ohmi, Yoshio Ishihara | 1995-08-22 |
| 5414361 | Method of measuring very small quantity of impurity in gas | Tadahiro Ohmi, Yoshio Ishihara | 1995-05-09 |