| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 6 | |
| #2 | China | 5 | |
| #3 | South Africa | 5 | |
| #4 | EPO (European Patent Office) | 3 | |
| #5 | United States | 3 | |
| #6 | Australia | 2 | |
| #7 | Brazil | 1 | |
| #8 | Republic of Korea | 1 | |
| #9 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Construction of roads | |
| #3 | Analysing materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cook Eric Johnstone | 14 |
| #2 | Mijburgh Christoffel Avril | 8 |
| #3 | Berrange Aubrey Ralph | 4 |
| #4 | Mulders David Alfred | 3 |
| #5 | Slyper Gideon | 3 |
| #6 | Cook E J | 3 |
| #7 | Cook Eric | 2 |
| #8 | Van Dyk Stephen | 2 |
| #9 | Mijburgh C A | 2 |
| #10 | Berrange A R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2005129467A1 | Drop mass compaction of soil | |
| ZA200409680B | Drop mass compaction of soil | |
| BR0312311A | Method and apparatus for compacting soil | |
| ZA200103195B | Compaction roller. | |
| AU6361999A | Compaction roller | |
| CA2290465A1 | Impact compactor | |
| ZA9608554B | Soil levelling device. | |
| CA2234579A1 | Soil levelling device |