HULDREICH KELLER has a total of 13 patent applications. Its first patent ever was published in 1909. It filed its patents most often in France, Germany and Switzerland. Its main competitors in its focus markets engines, pumps and turbines, mechanical elements and civil engineering are CHENGDU JIALING HUAXI OPTICAL & PREC MACHINERY CO LTD, HUBEI FEIJIAN PUMPS CO LTD and GUANGDONG GUANGSHUN NEW ENERGY POWER TECH CO LTD.
| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 8 | |
| #2 | Germany | 3 | |
| #3 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Gearing | |
| #3 | Clutches and brakes | |
| #4 | Hydraulic engineering | |
| #5 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Keller Huldreich | 8 |
| #2 | Huldreich Keller | 2 |