| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Germany | 3 | |
| #3 | Australia | 2 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Transport | |
| #3 | Materials and metallurgy | |
| #4 | Environmental technology | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Ships | |
| #3 | Metal production and refining | |
| #4 | Climate change mitigation in goods production | |
| #5 | Iron and steel production | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Joyce Francis J | 4 |
| #2 | Dean John Gilbert | 2 |
| #3 | John Joyce Francis | 2 |
| #4 | Lovelace Richard S | 1 |
| #5 | J Joyce Francis | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU3565271A | Production of ferronickel by selective prereduction of oxide ores | |
| AU3565371A | Production of ferronickel by selective reduction of oxide ores | |
| US3657829A | Draghead with concentric hollow cylinders having alignable ports | |
| US3352035A | Dredge | |
| US3149733A | Self-unloader | |
| US3217432A | Davit arrangement for raising and lowering a drag | |
| US2969083A | Vessel for carrying liquid or bulk cargoes |