| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | WIPO (World Intellectual Property Organization) | 2 | |
| #3 | Canada | 1 | |
| #4 | China | 1 | |
| #5 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | IT methods for management | |
| #3 | Mechanical elements | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Data processing systems | |
| #3 | Compressed gas holders | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Humphrey Richard L | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US2010241277A1 | System for monitoring propane or other consumable liquid in remotely located storage tanks | |
| US2006243347A1 | System for monitoring propane or other consumable liquid in remotely located storage tanks | |
| CN1997873A | Improved system for delivering propane or other consumable liquid to remotely located storage tanks |