Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5158729 | Process for producing a tube sheet | Hermann Gemeinhardt, Erich Schurmann | 1992-10-27 |
| 4984630 | Tube sheet for apparatus for transferring heat and/or mass, use thereof and process for its production | Hermann Gemeinhardt, Erich Schurmann | 1991-01-15 |
| 4724900 | Apparatus for effecting mass and/or heat transfer | Ulrich Baurmeister, Werner Sticksel | 1988-02-16 |