| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Supplying combustion engines | |
| #3 | Gas-turbine plants | |
| #4 | Climate change mitigation in transportation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gordon Vokes Cecil | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2407046A | Readily cleanable filter | |
| US2410371A | Filter | |
| US2372618A | Combined air filter and silencer | |
| US2381705A | Filter | |
| US2387368A | Filter for liquids or gases | |
| US2364573A | Filter | |
| US2319894A | Filter | |
| US2279423A | Filter | |
| US2198190A | Filter | |
| US2198189A | Filter | |
| US2057219A | Filter |