Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672874 | Infrared oil-concentration meter | Hiroshi Fujii, Ryosuke Fukushima, Masahiko Ishida, Shuzi Takada | 1997-09-30 |
| 5341102 | Electromagnetic induction-type conductivity meter with improved calibration with auxiliary circuit | Shigeyuki Akiyama | 1994-08-23 |