Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6523841 | Twist-beam axle for motor vehicles | Wigbert Christophliemke, Dieter Etzold | 2003-02-25 |
| 6152468 | Composite suspension control arm shaft for motor vehicles | Claus Mehren | 2000-11-28 |
| 6059314 | Method of manufacturing a composite control arm shaft for motor vehicles and composite control arm shaft | Wolfgang Streubel, Udo Klasfauseweh | 2000-05-09 |
| 5560814 | Use of thiouronium salts as brighteners for aqueous acidic electronickelization baths | Bernd Burkhart, Alfred Oftring, Volker Schwendemann, Ulrich Schroeder | 1996-10-01 |
| 5445724 | Phosphonium salts and use thereof as brighteners for aqueous acidic electronickelization baths | Bernd Burkhart, Alfred Oftring, Volker Schwendemann | 1995-08-29 |
| 5445727 | Production of nickelized shaped articles | Volker Schwendemann, Chung-Ji Tschang, Bernd Burkhart, Alfred Oftring, Bernhard Dung | 1995-08-29 |
| 5438140 | Production of nickelized shaped articles | Alfred Oftring, Bernd Burkhart, Volker Schwendemann | 1995-08-01 |
| 4997680 | Polymeric conditioner for pretreating nonmetallic surfaces for chemical metallization | Chung-Ji Tschang, Johannes P. Dix, Ekhard Winkler, Guenther Gotsmann, Rolf Fikentscher | 1991-03-05 |
| 4954369 | Chemical deposition of copper from alkaline aqueous baths | Alfred Oftring, Chung-Ji Tschang, Ekhard Winkler, Guenther Gotsmann | 1990-09-04 |
| 4940609 | Polymeric conditioner for pretreating nonmetallic surfaces for chemical metallization | Chung-Ji Tschang, Johannes P. Dix, Ekhard Winkler, Guenther Gotsmann, Rolf Fikentscher | 1990-07-10 |
| 4855423 | Preparation of sulfatobetaines | Gerold Braun, Chung-Ji Tschang, Christos Vamvakaris | 1989-08-08 |
| 4837330 | Preparation of sulfatobetaines | Gerold Braun, Chung-Ji Tschang, Christos Vamvakaris | 1989-06-06 |
| 4693909 | Aqueous wax dispersions as preservatives for metal surfaces and surfaces of coatings, their use and a process for preserving metal surfaces and surfaces of coatings | Walter Ziegler, Wolfram Dietsche, Stefan Weiss, Richard W. Mueller, Albert Hettche +1 more | 1987-09-15 |
| 4224421 | Water-soluble, crosslinked nitrogen-containing condensation products | Werner Streit, Rolf Fikentscher, Karl Gans, Gerhard Welzel, Emil Schaefer | 1980-09-23 |