Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D496600 | PH electrode | Akio Maeno, Koji Ueda, Hiroki Tanabe | 2004-09-28 |
| D493738 | Indicator for water quality measuring instrument | Akio Maeno, Naohiro Io, Takeshi Kobayashi | 2004-08-03 |