WILLY NELLISSEN has a total of 11 patent applications. Its first patent ever was published in 1922. It filed its patents most often in Germany, United Kingdom and United States. Its main competitors in its focus markets measurement are VDG VON DER GOLTZ GMBH, PENKOVSKIJ ANATOLIJ and TF INSTR GMBH.
| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Analysing materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Willy Nellissen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1519549A | Gas-indicating device | |
| GB208718A | Improvements in gas indicating devices |