| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Thermal processes | |
| #5 | Mechanical elements | |
| #6 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Gas-turbine plants | |
| #3 | Heat-exchanger without contact | |
| #4 | Fillers | |
| #5 | Dynamo-electric machines | |
| #6 | Heat-exchange device details | |
| #7 | Pipes | |
| #8 | Shaping of plastics | |
| #9 | Separation | |
| #10 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mueller Paul H Dr-Ing | 11 |
| #2 | Stiel Johann | 4 |
| #3 | Mueller Hans Peter Dipl-Ing | 1 |