| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Australia | 1 | |
| #5 | China | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Civil engineering | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Rotary-pistons | |
| #3 | Rotary pistons | |
| #4 | Pumps | |
| #5 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Davis Raymond C | 19 |
| Publication | Filing date | Title |
|---|---|---|
| WO2016028323A1 | Oil well safety valve apparatus and method | |
| CA2859874A1 | Oil well safety valve apparatus and method | |
| US2013180704A1 | Oil well pump apparatus | |
| US8813849B1 | Oil well safety valve apparatus and method | |
| US2009016899A1 | Oil well pump apparatus | |
| US2006153695A1 | Oil well pump apparatus |