Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624286 | Double-metal cyanide catalysts containing polyester for preparing polyether polyols | Jörg Hofmann, Pramod Gupta, Pieter Ooms, Walter Schafer | 2003-09-23 |
| 6472447 | Stabilized, finely disperse low-viscosity polymer polyols with a high content of polystyrene or polystyrene copolymers | Klaus Lorenz, Manfred Dietrich, Michael Brockelt, Uwe Scholz, Jurgen Gronen +1 more | 2002-10-29 |
| 6323375 | Crystalline double metal cyanide catalysts for producing polyether polyols | Jörg Hofmann, Pramod Gupta, Pieter Ooms, Walter Schafer, Michael Schneider | 2001-11-27 |
| 6297346 | Mixtures of cyclic oligocarbonates, their production and use | Burkhard Kohler, Duane B. Priddy, Jr., Yun Chen, Harald Pielartzik | 2001-10-02 |
| 6156871 | Mixtures of cyclic oligocarbonates, their production and use | Burkhard Kohler, Duane B. Priddy, Jr., Yun Chen, Harald Pielartzik | 2000-12-05 |
| 5786440 | Mixtures of cyclic oligocarbonates and their manufacture | Burkhard Kohler, Duane B. Priddy, Jr., Yun Chen, Harald Pielartzik | 1998-07-28 |
| 5726273 | Heat-curable compositions based on cyclic isocyanate addition reproducts | Douglas A. Wicks, Sze-Ming Lee, Duane B. Priddy, Jr., Philip E. Yeske | 1998-03-10 |
| 5693722 | Method for modifying the backbone of polymeric resins | Duane B. Priddy, Jr., Burkhard Kohler, Harald Pielartzik | 1997-12-02 |
| 5663274 | Heat-curable compositions based on cyclic isocyanate addition products | Sze-Ming Lee, Philip E. Yeske, Duane B. Priddy, Jr., Douglas A. Wicks | 1997-09-02 |
| 5637655 | Method for modifying the backbone of polymeric resins | Duane B. Priddy, Jr. | 1997-06-10 |
| 5623019 | Compatibilized thermoplastic molding composition | Jeffrey S. Wiggins, Harald Pielartzik, Joachim Franke, Clifford J. Lau | 1997-04-22 |
| 5618889 | Poly(arylether)/liquid crystalline polyester block copolymers and a process for their production | Douglas A. Wicks, Dittmar Nerger, Harald Pielartzik, Rolf Wehrmann | 1997-04-08 |
| 5605979 | Method for modifying the backbone of polymeric resins | Duane B. Priddy, Jr. | 1997-02-25 |
| 5605961 | Thermoplastic composition containing polyurethane and polypropylene | Bin Lee, H. Pielartzik, Clifford J. Lau, Raymond A. Yourd, III, Jeffrey S. Wiggins | 1997-02-25 |
| 5414054 | Copolycarbonate having improved low-temperature impact strength | Erik H. Jonsson, Rick L. Archey, Aaron D. Meltzer, Harald Pielartzik, Raymond A. Yourd, III | 1995-05-09 |
| 5399658 | Gamma-radiation-resistant polycarbonate composition | Rick L. Archey, Aaron D. Meltzer, Harald Pielartzik | 1995-03-21 |
| 5342905 | Process for making an ester containing polyether sulfone | Aaron D. Meltzer, Harald Pielartzik | 1994-08-30 |
| 5221727 | Aromatic polyethers containing ester groups | Rolf Wehrmann, Harald Pielartzik, Dittmar Nerger | 1993-06-22 |
| 5169907 | Polyether/polycarbonate block copolymers and a process for their production | Dittmar Nerger, Rolf Wehrmann, Harald Pielartzik | 1992-12-08 |
| 5064929 | Aromatic polyethers containing azo groups | Dittmar Nerger | 1991-11-12 |