| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 8 | |
| #2 | Canada | 1 | |
| #3 | EPO (European Patent Office) | 1 | |
| #4 | United States | 1 | |
| #5 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Mechanical elements | |
| #3 | Civil engineering | |
| #4 | Control | |
| #5 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Sewers | |
| #3 | Venting or aerating devices | |
| #4 | Systems controlling non-electric variables | |
| #5 | Water treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cowan Anthony | 9 |
| Publication | Filing date | Title |
|---|---|---|
| GB0301496D0 | Sewerage overflow filtration apparatus | |
| GB0210803D0 | Gas relief valve | |
| GB0118725D0 | Waste water filtration tank with automatic flushing mechanism | |
| GB0112927D0 | Control valve | |
| GB0120602D0 | Waste water filtration tank |