Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5266369 | Packaging material made of electret material and packaging method | Katsutoshi Ando, Katsuya Ogawa, Yoshiharu Okumura, Yoshikazu Ii | 1993-11-30 |
| 5057710 | Electret materials and the method for preparing the electret materials | Katsutoshi Ando | 1991-10-15 |
| 4622263 | Water absorbing webs | Katsutoshi Ando, Yoshiyuki Yamamoto | 1986-11-11 |