| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 17 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Telecommunications | |
| #3 | Machine tools | |
| #4 | Audio-visual technology | |
| #5 | Basic communication technologies | |
| #6 | Optics | |
| #7 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Magnets and transformers | |
| #2 | Soldering, welding and flame cutting | |
| #3 | Transmission | |
| #4 | Television | |
| #5 | AC and DC conversion devices | |
| #6 | Waveguides | |
| #7 | Radiation protection | |
| #8 | Amplifiers | |
| #9 | Optical systems | |
| #10 | Electric switches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Philberth Bernhard | 17 |
| #2 | Philberth Dr Karl | 4 |
| #3 | Philberth Karl | 4 |
| #4 | Philberth Dipl-Phys Dr Karl | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE1236641B | Multi-part sheet metal cut for two- or three-leg transformers of lower power | |
| DE1236642B | transformer | |
| GB803914A | Stationary electromagnetic induction apparatus |