Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667634 | Method for controlling pitch deposits in papermaking process using lipase and polyelectrolyte | Yuko Fujita, Hidesato Shimoto, Masaki Sharyou | 1997-09-16 |
| 5616215 | Method of making paper from pulp treated with lipase and an aluminum salt | Hans Peter Heldt-Hansen, Yuko Fujita, Hidesato Shimoto, Masaki Sharyou | 1997-04-01 |