| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 12 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Charles Tyrer David | 8 |
| #2 | Paul Mckelvey John | 3 |
| #3 | Robert Crompton Brendan | 2 |
| #4 | Mckelvey John Paul | 1 |
| #5 | Tyrer David Charles | 1 |
| #6 | Philip Caplan Jonathan | 1 |
| #7 | Mckelvy John Paul | 1 |
| #8 | Jaarsveld Pieter Van | 1 |
| #9 | Compton Brendan Robert | 1 |
| #10 | Smuts Morne Hendrik Pastorino Paolo Ettore | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA200906065B | Filler valve nipple cap | |
| ZA200709834B | Pressure vessel filler nozzle | |
| ZA200705859B | Mine prop headboard | |
| ZA200705860B | A mine support prop | |
| ZA200701937B | Timber pole cutter | |
| ZA200603696B | Rock bolt | |
| ZA200603694B | Expandable rock anchor | |
| ZA200600355B | Pressure vessel filler nozzle | |
| ZA200306396B | Hydraulic mine support pre-load device pressure relief valve. | |
| ZA200305443B | Pneumatic loader for explosives and stemming. | |
| ZA200304429B | Inflatable tensioning device. | |
| ZA200303158B | Remotely operable fluid flow control valve. |