| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Brazil | 4 | |
| #3 | Canada | 4 | |
| #4 | Mexico | 3 | |
| #5 | WIPO (World Intellectual Property Organization) | 3 | |
| #6 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Transport | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Guiding railway traffic | |
| #3 | Shaping clay | |
| #4 | Certain plastics | |
| #5 | Construction of roads | |
| #6 | Fillers | |
| #7 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Duffner Brent | 14 |
| #2 | Click Gary | 14 |
| #3 | Smith Bradley | 11 |
| #4 | Cameron Derek | 6 |
| #5 | Webb Martin | 5 |
| #6 | Brent Duffner | 3 |
| #7 | Gary Click | 3 |
| #8 | Lesher Scott D | 3 |
| #9 | Bradley Smith | 3 |
| #10 | Mattson Steven R | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2019211512A1 | Keyway tie | |
| US2018282949A1 | Boltless rail brace | |
| CA2959254A1 | Rail fastening apparatus | |
| US2015204023A1 | Grade crossing interface pad | |
| US2015159332A1 | Spring wing controller | |
| US2014339373A1 | Dual independent control hydraulic switch machine |