| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 5 | |
| #2 | EPO (European Patent Office) | 5 | |
| #3 | United States | 4 | |
| #4 | Canada | 3 | |
| #5 | WIPO (World Intellectual Property Organization) | 3 | |
| #6 | Republic of Korea | 2 | |
| #7 | Mexico | 2 | |
| #8 | Brazil | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | Slovakia | 1 | |
| #11 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Sewers | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Venting or aerating devices | |
| #5 | Water-closets with flushing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Grooms John M | 23 |
| #2 | Featheringill Burton A | 8 |
| #3 | Clear Christopher J | 7 |
| #4 | Featheringill Burton Addison | 5 |
| #5 | Grooms John Merril | 4 |
| #6 | Ricks Blake V | 3 |
| #7 | Clea Christopher J | 1 |
| #8 | Grooms John Merrill | 1 |
| #9 | Jones Mark Aaron | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU2006350593A1 | Vacuum sewage system with wireless alarm | |
| TW389816B | Dual backflow check valve, vacuum sewage system and method of preventing fluid backflow | |
| US5570715A | Sump-vented controller mechanism for vacuum sewerage transport system | |
| CA2255466A1 | Vacuum toilet discharge valve |