Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4461327 | Process and arrangements for charging a tubular reactor with granular solids | Franz Nenninger, Gerd-Juergen Engert | 1984-07-24 |
| 4448080 | Process and apparatus for monitoring the formation and propagation of cracks in machine parts and components | Manfred Dressel, Johannes Greven, Arnulf Jeck, Guenther Nick, Paul Schaffarczyk +1 more | 1984-05-15 |
| 4402349 | Process and apparatus for charging tubular reactors with granular solids, more particularly catalysts | Gerd-Juergen Engert, Klaus de Haas, Franz Nenninger, Horst Schauer | 1983-09-06 |