Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7520912 | Air purifying filter media and process for producing the same | Nobuyuki Sakadume, Toshihiko Soyama, Eiko Meguro, Mikiko Gokano | 2009-04-21 |
| 6730144 | Air purifying filter using modified enzymes | Atsuo Tanaka, Mikiko Gokano | 2004-05-04 |
| 6579352 | Air cleaning filter | Atsuo Tanaka, Mikiko Gokano | 2003-06-17 |
| 5484756 | Hydrodesulfurization catalyst and preparation thereof | — | 1996-01-16 |