Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6936094 | Adsorptive sheet and filter for clarifying air | Toyota Seki, Makoto Morita | 2005-08-30 |
| 6746760 | Gas adsorption sheet and air-purifying filter | Masayuki Imagawa | 2004-06-08 |
| 6416570 | Integrally molded type filter unit and manufacture of the same | Sadahito Goto, Mitsuhiko Akiyama | 2002-07-09 |