SONNENFELD HUGO ING has a total of 29 patent applications. Its first patent ever was published in 1917. It filed its patents most often in Austria and Switzerland. Its main competitors in its focus markets electrical machinery and energy are LUO ZHIZHAO, NL KABELFABRIEK NV and NORDDEUTSCHE KABELWERKE AKT GE.
| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 27 | |
| #2 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Cables and insulators | |
| #2 | Installation of electric cables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sonnenfeld Hugo Ing | 29 |
| #2 | Engblom John Ing | 2 |