| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | United States | 3 | |
| #3 | Australia | 2 | |
| #4 | Brazil | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 | |
| #6 | China | 1 | |
| #7 | Czechoslovakia | 1 | |
| #8 | German Democratic Republic | 1 | |
| #9 | EPO (European Patent Office) | 1 | |
| #10 | Finland | 1 | |
| #11 | Hungary | 1 | |
| #12 | Ireland | 1 | |
| #13 | Mexico | 1 | |
| #14 | New Zealand | 1 | |
| #15 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Chemical engineering | |
| #3 | Environmental technology | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Lubricating compositions | |
| #2 | Separation | |
| #3 | Unspecified technologies | |
| #4 | Water treatment | |
| #5 | Cremation furnaces | |
| #6 | Climate change mitigation in wastewater treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shurtleff Edward C | 12 |
| #2 | Shurtleff Edward Calton | 10 |
| #3 | Edward Calton Shurtleff | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5286349A | Apparatus for reclaiming useful oil products from waste oil | |
| US5188742A | Apparatus and method for removing contaminants from water | |
| US5271808A | Apparatus from waste oil for reclaiming a useful oil product | |
| CA1309370C | Apparatus and method for reclaiming waste oil |