| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | United States | 3 | |
| #4 | Australia | 2 | |
| #5 | India | 2 | |
| #6 | WIPO (World Intellectual Property Organization) | 2 | |
| #7 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Materials and metallurgy | |
| #3 | Environmental technology | |
| #4 | Organic fine chemistry | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Non-metallic elements | |
| #3 | Chemical or physical processes | |
| #4 | Water treatment | |
| #5 | Unspecified technologies | |
| #6 | Special acyclic compounds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hardison Leslie C | 9 |
| #2 | Nagl Gary J | 5 |
| #3 | Martell Arthur E | 2 |
| #4 | Chen Dian | 2 |
| #5 | Mcmanus Derek | 2 |
| #6 | Addison George E | 2 |
| #7 | Primack Harold S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5686613A | Tridentate metal ligands of certain pyridine phosphonic acids | |
| US5591419A | Oxidation-reduction process | |
| CA2202619A1 | Improved sulfur separation system | |
| US5651896A | Sulfur separation system with interface control | |
| AU7921294A | Two-stage process for the selective reduction of nox |