Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7488529 | Porous film and its production process | Kyosuke Watanabe, Yasushi Usami, Yutaka Kawai | 2009-02-10 |
| 4746576 | Writing screen | Takahiro Ozu, Keizo Abe | 1988-05-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7488529 | Porous film and its production process | Kyosuke Watanabe, Yasushi Usami, Yutaka Kawai | 2009-02-10 |
| 4746576 | Writing screen | Takahiro Ozu, Keizo Abe | 1988-05-24 |