| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | Australia | 3 | |
| #4 | Canada | 3 | |
| #5 | WIPO (World Intellectual Property Organization) | 3 | |
| #6 | South Africa | 2 | |
| #7 | Denmark | 1 | |
| #8 | Ireland | 1 | |
| #9 | Mexico | 1 | |
| #10 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Machines | |
| #3 | Thermal processes | |
| #4 | Mechanical elements | |
| #5 | Engines, pumps and turbines | |
| #6 | Surface technology and coating |
| # | Technology | |
|---|---|---|
| #1 | Air-conditioning | |
| #2 | Pipes | |
| #3 | Unspecified technologies | |
| #4 | Non-positive-displacement pumps | |
| #5 | Unspecified technologies | |
| #6 | Making textile fabrics | |
| #7 | Layered products | |
| #8 | Special textiles | |
| #9 | Knitting | |
| #10 | Woven fabrics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoy Robert W | 9 |
| #2 | Heyl Harry E | 5 |
| #3 | Ellison James R | 5 |
| #4 | Arnold Orlan M | 2 |
| #5 | Vancini Carlo A | 2 |
| #6 | Tinker Charles L | 2 |
| #7 | Hoy R W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4615934A | Warp knit weft insertion fabric and plastic sheet reinforced therewith | |
| IE850496L | Controlable pitch axial fan | |
| ZA8409335B | Controllable pitch vaneaxial fans | |
| US4508486A | Ventilation fan with noise-attenuating housing | |
| WO8201926A1 | Coupling for mine ventilation conduits | |
| AU7891281A | Coupling for mine ventilation conduits | |
| US4421202A | Sound attenuator | |
| US4358139A | Coupling for mine ventilation conduits | |
| US3876396A | Process for cleaning gases | |
| US3880624A | Apparatus for washing gases and removing liquid entrained |