Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630540 | Covulcanizable anti-aging agents | Markus Oberthür | 2003-10-07 |
| 6414192 | Process for preparing 4-aminodiphenylamine | Michael Schelhaas, Carl Casser, Dietmar Bielefeldt, Pieter Ooms, Joachim Haider +2 more | 2002-07-02 |
| 6166256 | Process for preparing (4-nitro-sophenyl)phenylhydroxylamine | Henry Giera, Carl Casser, Pieter Ooms, Michael Schelhaas, Michaela Meiers +1 more | 2000-12-26 |
| 5932768 | Process for the preparation of 4-aminodiphenylamine | Pieter Ooms, Ulrich Notheis | 1999-08-03 |
| 5929294 | Easily transportable and meterable mixtures of aromatic oils and phenylenediamines having high stability in storage | Reinhard Preuss, Lothar Ruetz | 1999-07-27 |
| 5925791 | Process for producing 4-aminodiphenylamine | Hans-Josef Buysch, Heinrich Konigshofen, Ulrich Notheis, Pieter Ooms, Ursula Pentling | 1999-07-20 |
| 5801261 | Bisphosphines as catalysts for asymmetric reactions | Georg Schroder, Dieter Arlt | 1998-09-01 |
| 5739360 | Intermediates for the synthesis of bisphosphine compounds | Wolfram Sirges, Dieter Arlt, Rolf Grosser | 1998-04-14 |
| 5710339 | Bisphosphines as catalysts for asymmetric reactions | Georg Schroder, Dieter Arlt | 1998-01-20 |
| 5510503 | Bisphosphines for asymmetric hydrogenation catalysts | Georg Schroder, Dieter Arlt, Rolf Grosser | 1996-04-23 |
| 5362907 | Intermediates and their use in the preparation of s-ketoprofen | Georg Schroder, Dieter Arlt | 1994-11-08 |
| 5204471 | .alpha.-trifluoromethyl-substituted, saturated bicyclic amines | Michael Negele, Dieter Habich, Heinz Ziemann | 1993-04-20 |