| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 5 | |
| #2 | United States | 3 | |
| #3 | Australia | 1 | |
| #4 | Mexico | 1 | |
| #5 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Civil engineering | |
| #3 | Environmental technology | |
| #4 | Machines | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Earth drilling | |
| #3 | Unspecified technologies | |
| #4 | Pipes | |
| #5 | Reduction of greenhouse gas emissions | |
| #6 | Geothermal collectors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoffarth Clayton | 11 |
| Publication | Filing date | Title |
|---|---|---|
| CA2687189A1 | Method and apparatus for lessening the adverse effect of hydrostatic pressure on a down hole pump | |
| CA2644346A1 | Multiphase pump | |
| CA2644934A1 | Method of heating a heat trace line at a well | |
| WO2008089551A1 | Hydraulic submersible pump with electric motor drive | |
| CA2599447A1 | Pumping installation for a gas producing well | |
| CA2576693A1 | Hydraulic submersible pump with electric motor drive | |
| US7431572B2 | Hydraulic oil well pumping installation |