Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6180015 | Plastic filter for a photograph developing apparatus | Yosuke Egawa, Kanji Ueyama | 2001-01-30 |
| 5804074 | Porous plastic filter and process for its production | Yoshimi Takiguchi, Yosuke Egawa, Takayuki Watanabe | 1998-09-08 |