| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | Mexico | 2 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Rotary pistons | |
| #2 | Rotary-pistons | |
| #3 | Heat-exchanger without contact | |
| #4 | Refrigerators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heizer Charles K | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US2007084225A1 | Air cycle system with variable mix recuperator | |
| US7008201B2 | Gapless screw rotor device | |
| AU2003285043A1 | Improved screw rotor device | |
| US6719548B1 | Twin screw rotor device | |
| US6599112B2 | Offset thread screw rotor device |