Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5211220 | Tube for a shell and tube heat exchanger and process for the manufacture thereof | Gerhard Ullmann | 1993-05-18 |
| 4941692 | Adhesive connection of tubes formed of carbon or graphite | Kurt Schaffner, Gerhard Ullmann | 1990-07-17 |
| 4921283 | Connection of carbon or graphite tubes | Kurt Schaffner, Gerhard Ullmann | 1990-05-01 |
| 4474233 | Tube bundle heat exchanger | — | 1984-10-02 |
| 4425820 | Connecting rod of a composite material and method for manufacturing the same | — | 1984-01-17 |
| 4315575 | Vacuum support for burst protection device | Erwin Schwarz | 1982-02-16 |
| 4255363 | Column seal | Wilhelm Geiger | 1981-03-10 |