| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 12 | |
| #2 | India | 4 | |
| #3 | Brazil | 3 | |
| #4 | United Kingdom | 3 | |
| #5 | United States | 3 | |
| #6 | South Africa | 3 | |
| #7 | Argentina | 2 | |
| #8 | Canada | 2 | |
| #9 | EPO (European Patent Office) | 2 | |
| #10 | New Zealand | 2 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Separating solids using liquids |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wright Douglas Charles | 12 |
| #2 | Charles Wright Douglas | 7 |
| #3 | Wright D | 6 |
| #4 | Wright Douglas C | 5 |
| #5 | Roberts S | 3 |
| #6 | Roberts Sidney N | 3 |
| #7 | Roberts Sidney Norman | 2 |
| #8 | Wright D C | 2 |
| #9 | Robert Sidrey Norman | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU534737B3 | An improved spiral separator | |
| AU534736B3 | Improvements in spiral separators | |
| AU533832B3 | Improvements in or relating to spiral separators | |
| AU533831B3 | A spiral separator | |
| AU533830B3 | A spriral separator | |
| AU533829B3 | A spiral separator | |
| AU536397B3 | Splitter assemblies for spiral separators | |
| ZA8207007B | Spiral separators | |
| AU8664882A | Spiral separator | |
| GB2100624A | Spiral separators | |
| GB2098091A | Spiral separator | |
| ZA8200062B | Spiral separators | |
| NZ198138A | Spiral separator for particles in liquid | |
| AU7429781A | Spiral separator | |
| AU8486082A | Spiral separator | |
| US4324334A | Spiral separators | |
| EP0039139A2 | A spiral separator | |
| AU6943681A | Spiral separator | |
| GB2046131A | Spiral separator | |
| AU5520580A | Spiral separator |