Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11488967 | Eight-transistor static random access memory cell | Nigel Chan | 2022-11-01 |
| 11333279 | Tensioning ring with a tensioning section | Martin Heck, Ralf Kurz | 2022-05-17 |
| 5888465 | Process for separating hydrogen halides from gases containing sulphur dioxide | Ulrich Rappold, Wolfgang Schick, Joachim Semel, Heinrich Merten, Matthias Schubert +1 more | 1999-03-30 |
| 5808142 | Process for the preparation of 2-hydroxynaphthalene-6-carboxylic acid | Siegbert Rittner, Hans-Martin Ruffer, Thomas Wisser | 1998-09-15 |
| 5643494 | Process for the preparation of aromatic hydroxy carboxylic acids | Siegbert Rittner, Hans-Martin Ruffer, Thomas Wisser | 1997-07-01 |
| 5532406 | Process for preparing aromatic hydroxycarboxylic acids | Siegbert Rittner, Hans-Martin Ruffer, Thomas Wisser | 1996-07-02 |