| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | United States | 3 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Ireland | 1 | |
| #6 | Peru | 1 | |
| #7 | Poland | 1 | |
| #8 | Sweden | 1 | |
| #9 | WIPO (World Intellectual Property Organization) | 1 | |
| #10 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Materials and metallurgy | |
| #3 | Environmental technology | |
| #4 | Mechanical elements | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Building materials | |
| #2 | Climate change mitigation in wastewater treatment | |
| #3 | Safety devices | |
| #4 | Foundations and excavations | |
| #5 | Pipes | |
| #6 | Preparing clay | |
| #7 | Shafts | |
| #8 | Scaffolding | |
| #9 | Sewers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stephens Patrick J | 14 |
| Publication | Filing date | Title |
|---|---|---|
| AU4107099A | Method for filling voids with aggregate material | |
| CA2142812A1 | Method and apparatus for continuous mixing and injection of foamed cement grout | |
| WO9404331A1 | Method and apparatus for continuous mixing and injection of foamed cement grout | |
| US5241993A | Method for grouting cavities using a pumpable cement grout | |
| US5141363A | Mobile train for backfilling tunnel liners with cement grout | |
| US5063967A | Pumpable cement grout |