Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352418 | Filtering material and method of producing the same | — | 1994-10-04 |
| 5310548 | Deodorants, deodorant sheets, filter sheets and functional papers as well as filtering mediums for exhaust gas | Akihiko Yokoo, Takeshi Sakurai, Tetsuro Ogawa | 1994-05-10 |
| 5296254 | Method of producing a filtering material | — | 1994-03-22 |