Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644060 | Process for the preparation of 1-oxa-3,8-diaza-4-oxospiro[4.5]decane compounds | — | 1997-07-01 |
| 5594142 | Process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds | Karl Gaa, G unter Nowy | 1997-01-14 |
| 5331034 | Process for reducing the discoloration of a plastic molding composition at the processing temperature | Gerhard Pfahler | 1994-07-19 |
| 5169925 | Polymeric polyalkyl-1-oxa-diazaspirodecanes | Gerhard Pfahler, Gunther Nowy | 1992-12-08 |
| 5107043 | Process for the preparation a bis(3,3-bis(4-hydroxyalkylphenyl)butanoic acid)diol ester | Josef Wiedemann, Gerhard Pfahler, Gunther Nowy | 1992-04-21 |