| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 17 | |
| #2 | France | 10 | |
| #3 | Canada | 2 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Environmental technology | |
| #5 | Basic materials chemistry | |
| #6 | Materials and metallurgy | |
| #7 | Control | |
| #8 | Mechanical elements | |
| #9 | Thermal processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | May Clifford H | 6 |
| #2 | Bauer Walter C | 4 |
| #3 | Briggs Southwick W | 3 |
| #4 | Porter Roscoe C | 3 |
| #5 | Ewbank Walter J | 2 |
| #6 | Greger Herbert H | 2 |
| #7 | Murray Herman L | 2 |
| #8 | Briggs Southwick Walbridge | 1 |
| #9 | Ewbank Bethesda Walter J | 1 |
| #10 | Greger Herbert-Hans | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3199676A | Coalescing and filtering apparatus | |
| US3209916A | Filter construction | |
| US3085690A | Water separator | |
| US3170873A | Water filter-separator | |
| US2638581A | Signal device for filters | |
| US2583812A | Dehydration unit | |
| US2575995A | By-pass filter | |
| US2425152A | Plastic refractory | |
| US2495095A | Stacked disk filter | |
| US2444628A | Internal-combustion engine | |
| US2444670A | Method and apparatus for forming internal-combustion engine fuel charges | |
| US2454030A | Filter | |
| US2444347A | Method of treating glass wool and product resulting therefrom | |
| US2447680A | Filtering system | |
| US2421713A | Thermostatic orifice control | |
| US2430097A | Lubricating system | |
| US2401039A | Filtering device | |
| CA716382A | Filter and separator apparatus | |
| CA723456A | Filter construction |