| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | Spain | 2 | |
| #3 | France | 2 | |
| #4 | Austria | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Semiconductors | |
| #2 | Electrical machinery and energy | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Semiconductor devices | |
| #2 | Sawing | |
| #3 | Capacitors and switching devices | |
| #4 | Electric discharge tubes | |
| #5 | Grinding or polishing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jacobsen Hans | 4 |
| #2 | Maiwirth Fritz | 2 |
| #3 | Geisler Otmar | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB870030A | Plate-type selenium rectifier and method of manufacturing the same | |
| ES251281A1 | Procedure for the construction of selenio plane rectifiers (Machine-translation by Google Translate, not legally binding) | |
| ES243958A1 | Procedure for the connection of a current conductor with the metal surface electrode of a dry plate rectifier (Machine-translation by Google Translate, not legally binding) |