Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10395794 | High voltage electric transmission cable | Daniel Guery, Michel Martin, Sophie Barbeau, Claus-Friedrich Theune, Corinne Poulard | 2019-08-27 |
| 9199294 | Method and device for manufacturing a corrugated metal pipe | Nico Lange, Christian Reiter, Christian Frohne, Holger Schulz | 2015-12-01 |
| 6789318 | Method for producing longitudinally welded helically corrugated metal tubing | Christian Frohne, Friedrich Harten | 2004-09-14 |
| 6550300 | Apparatus for producing annularly corrugated metal tubes | Ernst Hoffmann, Klaus-D. Jank, Robert Strohmeyer, Friedrich Harten | 2003-04-22 |
| 6513699 | Process for the production of metal pipes | Friedrich Harten | 2003-02-04 |
| 6509544 | Process for producing a metal tube of copper | Hans-Joachim Arntz, Friedrich Harten | 2003-01-21 |
| 5529610 | Multiple zeolite adsorbent layers in oxygen separation | Charles F. Watson, Roger Dean Whitley | 1996-06-25 |
| 5331776 | Roofing abutment apparatus | Brett M. Shelton | 1994-07-26 |