Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880558 | Liquid cleaning preparation for hard surfaces | Frantisek Jost | 1989-11-14 |
| 4852591 | Apparatus for the care of contact lenses | Udo Schaab, Hans-Joachim Reitz, Juergen Orczech | 1989-08-01 |
| 4839098 | Liquid detergent | Ortburg Guirr, Peter Jeschke, Klaus Schumann, Karl Schmid, Manfred Biermann | 1989-06-13 |
| 4818427 | Pretreatment or steeping preparations for stubbornly soiled dishes and a process for washing such dishes | Theodor Altenschoepfer, Peter Jeschke | 1989-04-04 |