| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Civil engineering | |
| #3 | Environmental technology | |
| #4 | Machines | |
| #5 | Chemical engineering | |
| #6 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Gas, coke and tar production | |
| #2 | Earth drilling | |
| #3 | Purifying gas composition | |
| #4 | Solid waste disposal | |
| #5 | Contaminated soil reclamation | |
| #6 | Pipes | |
| #7 | Foundations and excavations | |
| #8 | Mixing | |
| #9 | Preparing clay | |
| #10 | Spraying devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Liesewitz Franz | 3 |
| #2 | Benner Lutz-Heinrich | 2 |
| #3 | Muhlen Heinz-Jurgen | 2 |
| #4 | Dahle Olof | 1 |
| #5 | Schmid Christoph Dr | 1 |
| #6 | Feld Dagobert | 1 |
| #7 | Deppe Hans Herrmann | 1 |
| #8 | Giertz Hans Josef | 1 |
| #9 | Bartsch Stefan | 1 |
| #10 | Schmid Christoph | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5806612A | Apparatus for the transmission of information in a drill string |