Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6685907 | Process for producing silica particles suitable for use as filler for paper | Masashi Matsuda, Hitoshi Okada, Motohide Wada, Osamu Kitao | 2004-02-03 |
| 6413373 | Process for producing silica particles suitable for use as filler for paper | Masashi Matsuda, Hitoshi Okada, Motohide Wada, Osamu Kitao | 2002-07-02 |
| 6264907 | Process for producing silica particles suitable for use as filler for paper | Masashi Matsuda, Hitoshi Okada, Motohide Wada, Osamu Kitao | 2001-07-24 |