| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Canada | 3 | |
| #3 | Belgium | 2 | |
| #4 | Spain | 2 | |
| #5 | Austria | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Czechoslovakia | 1 | |
| #8 | German Democratic Republic | 1 | |
| #9 | Japan | 1 | |
| #10 | New Zealand | 1 | |
| #11 | Portugal | 1 | |
| #12 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Environmental technology | |
| #3 | Machines | |
| #4 | Foods and drinks | |
| #5 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Separation | |
| #3 | Chemical or physical processes | |
| #4 | Unspecified technologies | |
| #5 | Food proteins | |
| #6 | Compounds containing metals |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nieuwenhuis Garmt J | 10 |
| #2 | Harrison Charles C | 3 |
| #3 | Gaamuto Jiei Niyuuuenhoisu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA1084181A | Apparatus for removal of impurities from liquids | |
| US4156647A | Process and apparatus for removal of impurities from liquids | |
| CA1003129A | Process for treating water comtaminated with hexavalent chromium | |
| US3493328A | Process for removing hexavalent chromium from industrial metal treating wastes and rinse waters | |
| US2872973A | Spray drying apparatus for liquid material | |
| US2873026A | Method and apparatus for preparing and filtering animal blood for drying | |
| CA597977A | Liquid filter screen with agitator |