Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7259227 | Method for continuous production of high-molecular weight polyesters and device for implementation of the method | Eike Schulz Van Endert, Rainer Hagen, Thomas Hille, Christian Atlas | 2007-08-21 |
| 7115701 | Method for the continuous production of high-molecular polyester and device for carrying out the method | Eike Schultz Van Endert, Rainer Hagen, Thomas Hille, Christian Atlas | 2006-10-03 |
| 6800718 | Process for producing polytrimethylene terephthalate (PTT) | Fritz Wilhelm, Eckhard Seidel, Hans Reitz, Klaus Mackensen, Donald R. Kelsey +2 more | 2004-10-05 |
| 6550497 | Multipath rotary disc valve for distributing polymer plastics melts | Detlef Gneuss | 2003-04-22 |
| 6358578 | Method for the production of polyester with mixed catalysts | Brigitta Otto, Jens Schiebisch | 2002-03-19 |
| 6066713 | Process for improving the drawing ability of polyester | Werner Mrose | 2000-05-23 |
| 5993712 | Process for the processing of polymer mixtures into filaments | Dietmar Wandel, Joachim Cziollek, Alexander Klein, Heinz-Dieter Schumann | 1999-11-30 |
| 5965259 | Process of making poy polyester fiber | Heinz-Dieter Schumann | 1999-10-12 |
| 5962131 | Process for processing polymer mixtures to filaments | Helmut Schwind, Wolfgang Janas, Klaus Dorn, Peter Kempf, Dietmar Wandel +3 more | 1999-10-05 |
| 5798433 | Process for production of polypropylene terephthalate | Wolfgang Schmidt, Stephanie Schauhoff, Dahai Yu | 1998-08-25 |
| 5756033 | Process of making poy polyester fiber | Heinz-Dieter Schumann | 1998-05-26 |
| 5744572 | Process for the acceleration of the polycondensation of polyester | Heinz-Dieter Schumann | 1998-04-28 |
| 5733969 | Zeolite catalyst for the polycondensation of polyester | — | 1998-03-31 |
| 5656221 | Process for direct production of low acetaldehyde packaging material | Heinz-Dieter Schumann | 1997-08-12 |
| 5656716 | Titanium-containing catalyst and process for the production of polyester | Wolfgang Schmidt, Wolf-Dieter Griebler, Bernd Hirthe, Elke Hirschberg | 1997-08-12 |
| 5565545 | Process for adjusting the haze of ethyleneterephthalate polymers | Gerald Kriesche | 1996-10-15 |
| 5536810 | Process for thermal treatment of polyester chips in the solid state | — | 1996-07-16 |
| 5362844 | Continuous process for the production of polyester for food packaging | Hans Kerpes | 1994-11-08 |
| 5308892 | Process for the preparation of polyester-masterbatch containing finely divided additives | Dieter Zickler | 1994-05-03 |
| 5292865 | Process for preparation and after-treatment of polyester pellets | Hans Kerpes | 1994-03-08 |
| 5235027 | Modified copolyethylene terephthalate | Heinz-Dieter Schumann | 1993-08-10 |
| 5198530 | Process for continuous polycondensation of terephthalic acid and 1,4-bis(hydroxymethyl)cyclohexane | Manfred Kyber, Wolfgang Schmidt | 1993-03-30 |
| 5194573 | Discontinuous process for polycondensation of terephthalic acid and 1,4-bis(hydroxymethyl)cyclohexane | Wolfgang Schmidt | 1993-03-16 |
| 4960915 | Process for the production of linear polyesters, particularly for films and foils | — | 1990-10-02 |