Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5105004 | Aromatic ethers | Knud Reuter, Dieter Freitag, Gunther Weymans, Rolf Dhein, Paul J. Mayska +2 more | 1992-04-14 |
| 5104963 | Two-stage process for the production of polycarbonates based on special dihydroxydiphenylalkanes | Dieter Freitag, Gerd Fengler, Ulrich Grigo | 1992-04-14 |
| 5104945 | Heat resistant polycarbonate molding compositions | Thomas Eckel, Dieter Wittmann, Dieter Freitag, Karl-Heinz Ott | 1992-04-14 |
| 5104723 | Mixtures of special new polycarbonates with other thermoplastics or with elastomers | Dieter Freitag, Kurt Weirauch, Gunther Weymans | 1992-04-14 |
| 5100960 | Thermoplastic molding compositions of a polysiloxane block copolycarbonate and a polycarbonate based on certain dihydroxydiphenylcycloalkanes | Ulrich Grigo, Peter Horlacher, Dieter Freitag, Karsten-Josef Idel, Wolfgang Beer +1 more | 1992-03-31 |
| 5086159 | Stabilized copolycarbonate from dihydroxy diphenyl cycloalkane | Karl-Herbert Fritsch, Werner Nouvertne, Dieter Freitag | 1992-02-04 |
| 5068302 | Polysiloxane-polycarbonate block copolymers based on certain dihydroxydiphenylcycloalkanes | Peter Horlacher, Volker Serini, Dieter Freitag, Ulrich Grigo, Karsten-Josef Idel | 1991-11-26 |
| 5041521 | Polyester-carbonate based on 1,1-bis-(4-hydroxyphenyl)-alkylcycloalkanes | Volker Serini, Dieter Freitag, Ulrich Grigo | 1991-08-20 |
| 5025065 | Fire-retardant polycarbonates and polyesters | Peter Tacke, Ulrich Grigo, Werner Nouvertne, Dieter Freitag, Karsten-Josef Idel | 1991-06-18 |
| 5021542 | Polycarbonate of polysubstituted cyclohexylidene bisphenols | Volker Serini, Dieter Freitag, Karsten-Josef Idel, Ulrich Grigo, Klaus-Christian Paetz | 1991-06-04 |
| 5010162 | Polycarbonate of alkyl cyclohexylidene bisphenol | Volker Serini, Dieter Freitag, Karsten-Josef Idel, Ulrich Grigo, Carl Casser +2 more | 1991-04-23 |
| 5010138 | Thermoplastic interpolymers and their use in mixtures of polyamide and styrene copolymers and/or graft polymers | Karl-Erwin Piejko, Christian Lindner | 1991-04-23 |
| 5010147 | High-strength polycarbonate mixtures | Gunther Weymans, Ulrich Grigo, Karsten-Josef Idel, Dieter Freitag | 1991-04-23 |
| 5010163 | Polycarbonate of cycloalkylidene bisphenol | Volker Serini, Dieter Freitag, Karsten-Josef Idel, Ulrich Grigo, Carl Casser +2 more | 1991-04-23 |
| 4997974 | Bisphenol derivatives and polymers thereof | Holger Lutjens, Karl-Erwin Piejko, Christian Lindner | 1991-03-05 |
| 4985486 | Reinforced/filled blends of thermoplastic interpolymers and polyamides and a process for their production | Christian Lindner, Karl-Erwin Piejko, Hans-Joachim Laue | 1991-01-15 |
| 4985532 | Thermotropic polyesters, a process for their production and their use for the production of moldings, filaments and films | Ralf Pakull, Dieter Freitag, Volker Eckhardt, Karsten-Josef Idel | 1991-01-15 |
| 4985492 | Polyphenylene ether molding compositions | Dieter Wittmann, Thomas Eckel, Karl-Heinz Ott, Volker Damrath | 1991-01-15 |
| 4982014 | Dihydroxydiphenyl cycloalkanes, their production and their use for the production of high molecular weight polycarbonates | Dieter Freitag, Claus Wulff, Karl-Herbert Fritsch, Carl Casser, Gunther Weymans +2 more | 1991-01-01 |
| 4970262 | Process for the production of moulding compositions from thermoplastic polyamide and graft rubber, and corresponding moulding compositions | Ludwig Trabert, Rudolf Binsack, Dieter Wittmann, Christian Lindner, Josef Merten | 1990-11-13 |
| 4945124 | Impact resistant polyamide moulding compounds modified with silicone graft rubbers | Christian Lindner, Karl-Erwin Piejko, Josef Merten | 1990-07-31 |
| 4822852 | High-impact dimensionally stable polyamide molding compositions | Dieter Wittmann, Karsten-Josef Idel, Christian Lindner, Josef Merten, Harald Selbeck | 1989-04-18 |