| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | Ireland | 4 | |
| #3 | United States | 4 | |
| #4 | Austria | 2 | |
| #5 | Australia | 2 | |
| #6 | Belgium | 2 | |
| #7 | Switzerland | 2 | |
| #8 | France | 2 | |
| #9 | United Kingdom | 2 | |
| #10 | Italy | 2 | |
| #11 | South Africa | 2 | |
| #12 | Germany | 1 | |
| #13 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Environmental technology | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Construction of roads | |
| #2 | Percussive tools | |
| #3 | Climate change adaptation technologies | |
| #4 | Working stone | |
| #5 | Tools for connecting or disengaging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Clarke Ronald Albert William | 5 |
| #2 | Clarke Ronald A W | 5 |
| #3 | Clarke R | 3 |
| #4 | Clark R | 1 |
| #5 | Albert William Clarke Ronald | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA1139975A | Mobile apparatus for reverberating surfaces | |
| US3904245A | Machine for cutting recess in concrete by impact | |
| US3915582A | Method of repairing concrete roads | |
| GB1407206A | Road levelling machine | |
| GB1397924A | Method and apparatus for cutting grooves in concrete roads | |
| IE34206L | Method for repairing concrete roads | |
| IE34207L | Machine for cutting concrete | |
| CA895083A | Method and apparatus for repairing concrete roads |