Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5082973 | Process for the preparation of bis(4-chlorophenyl) sulfone | Peter Neumann, Heinz Eilingsfeld | 1992-01-21 |
| 5072049 | Process for the preparation of bis(4-hydroxyphenyl) sulfone | Peter Neumann, Bernd Hupfeld, Helmut Reichelt | 1991-12-10 |
| 5059715 | Preparation of bis(4-hydroxyphenyl)sulfone | Peter Neumann, Wolfgang Ruehenback, Michael Bergner | 1991-10-22 |
| 4983773 | Preparation of bis-(4-chlorophenyl) sulfone | Peter Neumann, Heinz Eilingsfeld | 1991-01-08 |
| 4873372 | Isolation of 4,4'-dichlorodiphenyl sulfone | Gerhard Schaefer, Heinz Eilingsfeld, Peter Neumann | 1989-10-10 |