| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | United States | 4 | |
| #3 | Argentina | 1 | |
| #4 | Peru | 1 | |
| #5 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Chemical engineering | |
| #4 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Rotary-pistons | |
| #3 | Separation | |
| #4 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Obrejanu Marcel | 10 |
| #2 | Weiler David H | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2010101779A1 | Multiple-block downhole anchors and anchor assemblies | |
| US2009114400A1 | Downhole resettable clutch swivel | |
| CA2207770A1 | Continuous flow downhole gas separator for progressing cavity pumps | |
| CA2088757A1 | Anchoring device for tubing string | |
| US5228507A | Wireline hydraulic retrieving tool |