Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5412060 | Process for the production of polycarbonate of constant viscosity | Claus Wulff, Uwe Hucks, Rolf Bachmann, Jurgen Kadelka, Wolfgang Herrig | 1995-05-02 |
| 5368699 | Method of controlling the concentrations of a multicomponent mixture | Franz Ferdinand Rhiel, Said Mahiout | 1994-11-29 |
| 5363905 | Method of controlling heat exchangers using enthalpy flow as the correcting variable | Franz Ferdinand Rhiel, Heinrich Steude, Klaus Elgeti | 1994-11-15 |
| 5275758 | Production of ultrafine suspensions of bisphenol, sodium hydroxide and water | Claus Wulff, Reinhard Schomacker, Jurgen Kadelka, Jürgen Heuser, Konrad Hable | 1994-01-04 |
| 5260418 | Washing of polycarbonates with cascading train of centrifuges | Claus Wulff, Jürgen Heuser | 1993-11-09 |
| 5258484 | Process for the production of polycarbonate | Reinhard Schomacker, Uwe Hucks, Wolfgang Herrig, Jurgen Kirsch | 1993-11-02 |
| 5250658 | Isolation of polycarbonate with carbon dioxide | Hanns-Ingolf Paul, Rolf Treckmann, Jurgen Kirsch, Wolfgang Herrig | 1993-10-05 |
| 5248763 | Isolation of poly(ester)carbonates from methylene chloride using carbon dioxide fluid | Jurgen Kirsch, Dieter Freitag | 1993-09-28 |
| 5244544 | Process for the separation of multicomponent systems containing intermediate boiling substances in separating columns with side discharge | Lothar Lang, Franz Ferdinand Rhiel | 1993-09-14 |
| 5235026 | Continuous production of polycarbonates | Claus Wulff, Hermann Kauth, Zoltan Kricsfalussy, Wolfgang Alewelt, Jürgen Heuser | 1993-08-10 |
| 5229486 | Process for isolating polymers from their solvents using liquids containing carbon dioxide | Hanns-Ingolf Paul, Rolf Treckmann, Jurgen Kirsch, Jürgen Heuser, Klaus Elgeti | 1993-07-20 |
| 5227458 | Polycarbonate from dihydroxydiphenyl cycloalkane | Dieter Freitag, Uwe Westeppe, Claus Wulff, Karl-Herbert Fritsch, Carl Casser +2 more | 1993-07-13 |
| 5221731 | Process for isolating polycarbonates with CO.sub.2 under pressure | Jurgen Kirsch, Wolfgang Herrig, Hanns-Ingolf Paul, Rolf Treckmann | 1993-06-22 |
| 5198525 | Aromatic copolyether sulfones | Knud Reuter, Wolfgang Jilge, Bernd Pittel | 1993-03-30 |
| 5149761 | Aromatic ether imides | Knud Reuter, Dieter Freitag, Rolf Dhein | 1992-09-22 |
| 5138031 | Linear and branched poly-p-arylene sulfide substantially free from defect structures having plural absorption maxima | Ernst-Ulrich Dorf, Wolfgang Russeler, Manfred Schmidt, Erich Meier | 1992-08-11 |
| 5132154 | Polycarbonate mixtures in optical applications | Uwe Westeppe, Dieter Freitag, Karsten-Josef Idel | 1992-07-21 |
| 5126428 | Polycarbonate from dihydroxy diphenyl cycloalkane | Dieter Freitag, Uwe Westeppe, Claus Wulff, Karl-Herbert Fritsch, Carl Casser +2 more | 1992-06-30 |
| 5115076 | Aromatic copolyether ketones of dihydroxydiphenyl alkanes and phthaleins and a process for their production | Knud Reuter, Wolfgang Jilge, Bernd Pittel | 1992-05-19 |
| 5109076 | Polydiorganosiloxane/polycarbonate block cocondensates based on certain dihydroxydiphenylcycloalkanes | Dieter Freitag, Uwe Westeppe, Alfred K. Jung, Peter Horlacher, Ulrich Grigo +2 more | 1992-04-28 |
| 5104723 | Mixtures of special new polycarbonates with other thermoplastics or with elastomers | Dieter Freitag, Uwe Westeppe, Kurt Weirauch | 1992-04-14 |
| 5105004 | Aromatic ethers | Knud Reuter, Dieter Freitag, Rolf Dhein, Paul J. Mayska, Karsten-Josef Idel +2 more | 1992-04-14 |
| 5086157 | Aromatic polyether sulphones based on dihydroxy-diphenyl-cyclo-alkanes and films therefrom | Knud Reuter, Dieter Freitag, Rolf Dhein, Erich Meier, Gerold Muller | 1992-02-04 |
| 5010147 | High-strength polycarbonate mixtures | Uwe Westeppe, Ulrich Grigo, Karsten-Josef Idel, Dieter Freitag | 1991-04-23 |
| 4994579 | Aromatic ether imides | Knud Reuter, Dieter Freitag, Rolf Dhein | 1991-02-19 |