Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4345978 | Method and apparatus for preparing aromatic hydrazo or diaminodiphenyl compounds | Hans de Groot, Embrecht Barendrecht, Leonard J. J. Janssen | 1982-08-24 |
| 4246032 | Process for controlling the position of fibrous webs | — | 1981-01-20 |