Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090232 | Method and apparatus for detecting odors | Takeo Koizumi, Katuo Ehara, Masataka Hara, Masahiro Ehara | 1992-02-25 |
| 4770027 | Method of measuring concentrations of odors and a device therefor | Katuo Ehara, Takeo Koizumi | 1988-09-13 |