| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Australia | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Packaging and shipping | |
| #3 | Measurement | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Transport or storage devices | |
| #3 | Measuring volume | |
| #4 | Pipes | |
| #5 | Unspecified technologies | |
| #6 | Pistons and sealings | |
| #7 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sigmon James W | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US10287110B1 | Compression-loaded plastic rotors | |
| AU2688092A | Improved vaneless rotor airlock valve | |
| US5163656A | Vaneless rotary airlock valve | |
| US5029517A | Vaneless rotary airlock valve | |
| US4782741A | Vaneless rotary airlock valve | |
| CA1151631A | Expansible device | |
| US4295633A | Expansible device | |
| US4215722A | Rotary flow regulating valve and method |