Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6672164 | Process for determining the polymer concentration in a spinning dope solution | Willem G. Haanstra, Hans Lammers | 2004-01-06 |
| 6606901 | Process for determining the acidity of a washing solution for fibers | Willem G. Haanstra | 2003-08-19 |