Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643414 | Silica sols in papermaking | Hans Johansson | 1997-07-01 |
| 5603805 | Silica sols and use of the sols | Kjell Andersson, Erik Lindgren | 1997-02-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643414 | Silica sols in papermaking | Hans Johansson | 1997-07-01 |
| 5603805 | Silica sols and use of the sols | Kjell Andersson, Erik Lindgren | 1997-02-18 |