Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6986852 | Process for conditioning standing and flowing water systems | Thomas Sildatke, Thomas Menzel, Wolfgang Wambach, Winfried Joentgen, Thomas Klausa +1 more | 2006-01-17 |
| 5525257 | Composition for water treatment containing polyaspartic acidora derivative thereof and a polcarboxylic acid and methods of using the composition | Roland Kleinstuck, Torsten Groth, Winfreid Joentgen | 1996-06-11 |
| 5523023 | Water treatment/cleaning composition comprising polyaspartic acid or derivatives thereof and phosphonic acid | Roland Kleinstuck, Torsten Groth, Winfried Joentgen | 1996-06-04 |
| 5091562 | Process for eliminating 1-carboxy-1-phosphonocyclopentan-3-one from, or reducing its content in, technical 2-phosphonobutane-1,2,4-tricarboxylic acid using bleaching liquor | Michael Immenkeppel, Roland Kleinstuck, Hans-Dieter Block, Peter C. Schmidt | 1992-02-25 |