| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 4 | |
| #3 | Australia | 3 | |
| #4 | China | 3 | |
| #5 | EPO (European Patent Office) | 3 | |
| #6 | WIPO (World Intellectual Property Organization) | 3 | |
| #7 | Russian Federation | 2 | |
| #8 | Norway | 1 | |
| #9 | New Zealand | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Basic materials chemistry | |
| #3 | Chemical engineering | |
| #4 | Machines | |
| #5 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Inorganic fertilisers | |
| #3 | Organic fertilisers | |
| #4 | Unspecified technologies | |
| #5 | Climate change adaptation technologies | |
| #6 | Drying solid materials by removing liquid | |
| #7 | Separation | |
| #8 | Building materials | |
| #9 | Mixing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Christy Paul G | 27 |
| #2 | Christy Richard W | 8 |
| #3 | Christy Robert W Sr | 7 |
| #4 | Quici Michael | 5 |
| #5 | Christy P C | 1 |
| #6 | Christy Paul C | 1 |
| #7 | Kristi Pol Zh | 1 |
| #8 | Kristi R W Cristi P C | 1 |
| #9 | Christy P G | 1 |
| #10 | Christy R W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2008083133A1 | Apparatus, method and system for treating sewage sludge | |
| WO2006113176A2 | Method and apparatus for treating lime slurry for grit removal | |
| US2006231511A1 | Method and apparatus for treating lime slurry for grit removal | |
| US5681481A | Process and apparatus for liquid sludge stabilization | |
| US5554279A | Apparatus for treatment of sewage sludge | |
| US5405536A | Process and apparatus for pathogen reduction in waste | |
| US5186840A | Process for treating sewage sludge | |
| US5013458A | Process and apparatus for pathogen reduction in waste |