Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5418043 | Amorphous silica filler | Masahide Ogawa, Kiyoshi Abe, Masao Takahashi, Yuuzi Washio, Toshio Kitsu | 1995-05-23 |
| 5384191 | Amorphous silica filler | Masahide Ogawa, Kiyoshi Abe, Masao Takahashi, Yuuzi Washio, Toshio Kitsu | 1995-01-24 |
| 5266397 | Amorphous silica-type filler | Masahide Ogawa, Kiyoshi Abe, Masao Takahashi, Yuuzi Washio, Toshio Kitsu | 1993-11-30 |
| 4892591 | Filler for ink jet recording paper | Masahide Ogawa, Teiji Sato, Masao Takahashi | 1990-01-09 |