Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911898 | Zeolite particles retaining silver ions having antibacterial properties | Zenji Hagiwara, Shigetaka Hoshino, Saburo Nohara, Kenichi Tagawa, Keio Yamanaka | 1990-03-27 |
| 4911899 | Zeolite particles having bacteriocidal properties | Zenji Hagiwara, Shigetaka Hoshino, Saburo Nohara, Kenichi Tagawa, Keio Yamanaka | 1990-03-27 |
| 4775585 | Polymer article having an antibacterial property containing zeolite particles therein and the processes for producing same | Zenji Hagiwara, Shigetaka Hoshino, Saburo Nohara, Kenichi Tagawa, Keio Yamanaka | 1988-10-04 |
| 4259299 | Process for removing ozone from an ozone-containing gas | Zenzi Hagiwara, Iwao Uenoyama | 1981-03-31 |