| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 3 | |
| #3 | United Kingdom | 1 | |
| #4 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay | |
| #2 | Machines for making railways | |
| #3 | Unspecified technologies | |
| #4 | Construction of roads | |
| #5 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Petersen Rick W | 5 |
| #2 | Firth Derek | 3 |
| #3 | Eriksson Anders L U | 3 |
| #4 | Brickner Peter S | 3 |
| #5 | White John G | 3 |
| #6 | Mattson Steven R | 2 |
| #7 | Oestmann Roger K | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US6350093B1 | Electrically insulated threaded fastener anchor | |
| US6129288A | Railroad crossing panel filler | |
| MX9605743A | Crosstie moulds insert or concrete railroad ties for rail fasteners. | |
| US5766648A | Road transportable segmental concrete railroad tie long-line production system | |
| US5716539A | Concrete railroad tie mold insert for rail fasteners | |
| US5104039A | Railroad tie | |
| GB8913256D0 | Concrete railroad ties |