Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6071844 | Method of producing .epsilon.-Caprolactam, MFI zeolite catalysts on whose surface symmetrically arranged OH groups are present and to a method of producing them | Wolfgang Hoelderich, Dietrich Arntz | 2000-06-06 |
| 5741904 | Method of producing .epsilon.-caprolactam, MFI zeolite catalysts on whose surface symmetrically arranged OH groups are present and to a method of producing them | Wolfgang Hoelderich, Dietrich Arntz | 1998-04-21 |