Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8178618 | Process for production of a modified acetalated polyvinyl alcohol | Michael Frank, Sven Köhnen, Kaoru Ikeda | 2012-05-15 |
| 7528192 | Crosslinked polyvinyl acetals | Bernd Papenfuhs, Martin Steuer | 2009-05-05 |
| 7511096 | Crosslinked polyvinyl acetals | Bernd Papenfuhs, Martin Steuer | 2009-03-31 |
| 5866654 | Process for preparing poly ( vinyl acetals ) and poly (vinyl ketals) | Robert Fuss, Martin Baumgartner | 1999-02-02 |
| 5580938 | Graft polyvinyl acetals having acetal groups from etherified .omega.-hydroxy(poly)alkoxyalkanals, processes for their preparation and their use | Matthias Kroggel | 1996-12-03 |
| 5573842 | Polyvinylbutyral films having improved optical properties | — | 1996-11-12 |
| 5514752 | Polypropylene molding composition having improved surface properties | Hans-Jurgen Zimmermann | 1996-05-07 |
| 5466751 | Plasticized polymer moldings made from modified polyvinyl butyrals | Matthis Kroggel | 1995-11-14 |
| 5430116 | Polymers and oligomers of bile acid derivatives, process for their preparation and their use as pharmaceuticals | Werner Kramer, Stefan Mullner, Matthias Kroggel | 1995-07-04 |
| 5367015 | Polyvinyl acetals having improved melt viscosity characteristics, processes for their preparation and their use | Matthias Kroggel | 1994-11-22 |
| 5019624 | Polyvinyl acetals and their use | Robert K. Driscoll, Ernst I. Leupold | 1991-05-28 |