| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 123 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Measurement | |
| #3 | Transport | |
| #4 | Engines, pumps and turbines | |
| #5 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Measuring volume | |
| #3 | Vehicle signalling and lighting | |
| #4 | Supplying combustion engines | |
| #5 | Pumps | |
| #6 | Electric switches | |
| #7 | Dynamo-electric machines | |
| #8 | Internal-combustion piston engines | |
| #9 | Electrically-conductive connections | |
| #10 | Motor vehicles |