Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7108737 | Method for the purification of corrosive gases | Ewald Neumann, Wolfgang Himmler, Werner Buttner, Harald Fritsch, Hans-Jurgen Schmidt | 2006-09-19 |
| 6939527 | Method for the purification of hydrogen peroxide solutions | Dietmar Oeter, Claus Dusemund, Ewald Neumann, Klaus Freissler | 2005-09-06 |
| 6793905 | Method for producing high-purity hydrochloric acid | Werner Buttner, Ching-Jung Kan, Chih-Peng Lu | 2004-09-21 |
| 6740302 | Method for producing high-purity sulphuric acid | Werner Buttner, Rolf Hafner, Chih-Peng Lu, Ching-Jung Kan, Ekkehart Seitz +1 more | 2004-05-25 |
| 6338743 | Buffer solutions for suspensions used in chemical-mechanical polishing | Claus Dusemund, Rudolf Rhein, Manuela Schweikert | 2002-01-15 |
| 5235078 | Heterocyclic organometallic compounds | Ludwig Pohl, Matthias Lokai | 1993-08-10 |
| 5234716 | Organometallic adduct compounds | Matthias Lokai, Ludwig Pohl | 1993-08-10 |
| 5209952 | Use of organometallic compounds to deposit thin films from the gas phase | Dietrich Erdmann, Ludwig Pohl | 1993-05-11 |
| 5099044 | Organometallic compounds | Dietrich Erdmann, Ludwig Pohl | 1992-03-24 |
| 5030741 | Cyclic organometallic compounds | Dietrich Erdmann, Ludwig Pohl, Matthias Lokai | 1991-07-09 |
| 5015747 | Organometallic compounds | Ludwig Pohl, Dietrich Erdmann, Herbert Schumann, Uwe Hartmann, Meino Heyen +1 more | 1991-05-14 |