Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873326 | Process for the preparation of N-alkylated caprolactams | Wolfgang Jakob, Wolfgang Alewelt | 1989-10-10 |
| 4804689 | Process for holding and foaming thermoplastic polyphenylene sulphide articles and the resultant products | Paul J. Mayska | 1989-02-14 |