Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8487022 | Composition for surface colouration of paper | Michael Lennartz, Asko Karppi | 2013-07-16 |
| 8062415 | Paper coating compositions | Ray Davenport, Ian William Knowles, Terry Lloyd, Barry McLow, Heinz Schneider | 2011-11-22 |
| 8012221 | Process for surface colouration of paper | Michael Lennartz | 2011-09-06 |
| 7527657 | Liquid preparation of a copper phthalocyanine dye | Adolf Kaser | 2009-05-05 |