Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5831111 | Process for the continuous production of aryl carbonates | Pieter Ooms, Eric Bischof, Hans-Josef Buysch, Steffen Kuhling, Gottfried Zaby +2 more | 1998-11-03 |
| 5393835 | Polycarbonate/ABS molding compounds | Thomas Eckel, Dieter Wittmann, Gerhard Fennhoff, Jochen Schoeps, Karl-Heinz Ott | 1995-02-28 |
| 5269887 | Process for the purification of bisphenols | Manfred Schmidt, Dieter Freitag, Klaus Berg | 1993-12-14 |
| 5237046 | Process for stabilizing the molecular weight of linear or optionally branched polyarylene sulfides | Manfred Schmidt, Gabriel Denecker, Wolfgang Arlt | 1993-08-17 |
| 5214072 | Purification of polycarbonate, polyester carbonate or polyester waste | Gerhard Fennhoff, Manfred Ehlert | 1993-05-25 |
| 5151452 | Purification of polycarbonate and polyester carbonate waste | Gerhard Fennhoff, Manfred Ehlert, Dieter Freitag | 1992-09-29 |
| 5137938 | Mixture of polyarylene sulphides, glass fibres and maleimides | Burkhard Kohler, Wilfried Cramer, Hans-Joachim Traenckner, Harald Pielartzik, Wolfgang Wehnert +1 more | 1992-08-11 |
| 5086102 | Mixtures of poly(arylene sulphides), maleamidic acids and glass fibres | Harald Pielartzik, Burkhard Kohler, Hans-Joachim Traenckner, William C. Bushong | 1992-02-04 |
| 5066775 | Copoly arylene/alkylene sulfide | Ernst-Ulrich Dorf, Klaus Reinking, Erhard Tresper, Wolfgang Russeler | 1991-11-19 |
| 4920201 | Isolation of purified solid polyarylene sulfide directly from polymerization solution | Erhard Tresper, Wolfgang Alewelt | 1990-04-24 |
| 4873326 | Process for the preparation of N-alkylated caprolactams | Wolfgang Alewelt, Erhard Tresper | 1989-10-10 |
| 4771120 | Polyarylene sulphide capped with monophenol compound | Wolfgang Alewelt, Franz Alfes, Wolfgang Eisermann, Erhard Tresper | 1988-09-13 |
| 4465840 | Process for the production of (thio) hydantoins | Bernhard Schulte, Willi Dunwald, Karl-Heinrich Meyer | 1984-08-14 |
| 4465839 | Process for the production of hydantoins | Bernhard Schulte, Willi Dunwald, Karl-Heinrich Meyer | 1984-08-14 |
| 4448942 | Process for the production of hydantoins | Bernhard Schulte, Willi Dunwald, Karl-Heinrichrich Meyer | 1984-05-15 |
| 4387251 | Process for the preparation of pure 4,4'-dihydroxyphenyl alkanes or 4,4'-dihydroxydiphenyl cycloalkanes | Karl-Heinrich Meyer, Ludwig Bottenbruch | 1983-06-07 |