Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624334 | Method for production of aryl alkyl ethers | Edgar Fuhrmann, Detlef Hagena, Heinz Günter Janneck, Jorg Talbiersky, Lutz Walther | 2003-09-23 |
| 4798909 | Process for recovery of polyarylpolyamines | — | 1989-01-17 |
| 4393239 | Process for the preparation of polyaryl amines having methylene bridges | — | 1983-07-12 |
| 4297511 | Method for the manufacture of polyarylamines having methylene bridges | — | 1981-10-27 |
| 4270010 | Hydroquinone by hydrolysis of p-aminophenol or salts | — | 1981-05-26 |
| 4250114 | Process for the recovery of polyarylpolyamines | — | 1981-02-10 |