Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364985 | Porous sheet | Mitsuru Tokuyama, Kenji Ohki, Kaoru Tsujii | 1982-12-21 |
| 4347844 | Porous sheet and process for preparation thereof | Kenji Ohki, Mistru Tokuyama, Kenji Kawabuchi | 1982-09-07 |