Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6552230 | Method for preparing 2-nitro-5-(phenylthio)-anilines | Volker Glock, Willi Streicher | 2003-04-22 |
| 6500988 | Method for producing aryl thiols by hydrogenating diaryldisulphides | Helmut Fiege | 2002-12-31 |
| 6271415 | S-(4-biphenyl)-thiosulphuric acids and their salts, method for producing the same and method for producing 4-mercaptobiphenyls | Helmut Fiege, Wolfgang Eymann | 2001-08-07 |
| 5994561 | Process for the preparation of aromatic maleimides | Ludger Heiliger, Rudiger Herpich, Josef Kasbauer | 1999-11-30 |
| 5179211 | Process for the preparation of indoles | Heinz U. Blank, Karlheinrich Meisel, Willi Streicher, Nikolaus Schulz, Dieter Irmscher +1 more | 1993-01-12 |
| 5030747 | Process for the preparation of .mu.-amino-acrylic acid esters | Heinz U. Blank, Erich Wolters, Halmut Kraus, Gerhard Marzolph, Gunter Silber | 1991-07-09 |