Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6682576 | Air filter medium, process of producing filter medium, air filter pack for air filters, and air filter unit for air filters | Hideyuki Kiyotani, Osamu Inoue, Yoshiyuki Shibuya, Osamu Tanaka | 2004-01-27 |