Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6436231 | Method and apparatus for crosslinking individualized cellulose fibers | Peter A. Graef, Colin Elston, Fred E. Olmstead, Clifford R. Bolstad, Mark W. Bowns +1 more | 2002-08-20 |
| 5830320 | Method of enhancing strength of paper products and the resulting products | David W. Park | 1998-11-03 |
| 5710434 | Isocyanate impregnating compositions | David W. Park | 1998-01-20 |
| 5652065 | Wood veneers and products therefrom having enhanced strength and stiffness | David W. Park, Alkiviadis G. Dimakis | 1997-07-29 |
| 5580922 | Cellulose products treated with isocyanate compositions | David W. Park | 1996-12-03 |
| 5437418 | Apparatus for crosslinking individualized cellulose fibers | Peter A. Graef, Colin Elston, Fred E. Olmstead, Clifford R. Bolstad, Mark W. Bowns +1 more | 1995-08-01 |
| 5399240 | Crosslinked cellulose products and method for their preparation | Peter A. Graef | 1995-03-21 |
| 5280097 | Laminated composites of polyurea-cellulose and methods for their manufacture | James F. L. Lincoln, David W. Park | 1994-01-18 |
| 5225047 | Crosslinked cellulose products and method for their preparation | Peter A. Graef | 1993-07-06 |
| 5140086 | Isocyanate modified cellulose products and method for their manufacture | James F. L. Lincoln, David W. Park | 1992-08-18 |
| 5008359 | Isocyanate modified cellulose products and method for their manufacture | — | 1991-04-16 |