| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Switzerland | 5 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Environmental technology | |
| #3 | Basic materials chemistry | |
| #4 | Chemical engineering | |
| #5 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Cyclones | |
| #2 | Gas-flow silencers for machines | |
| #3 | Separation | |
| #4 | Purifying gas composition | |
| #5 | Steam turbines | |
| #6 | Generating mechanical vibrations | |
| #7 | Unspecified technologies | |
| #8 | Combustion residues removal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tongeren Hermannus Van | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US2281963A | Sound deadener | |
| US2287652A | Spark arrester | |
| US2281962A | Dust sampler | |
| US2205966A | Dust collecting plant | |
| US2225808A | Coal fired water tube boiler | |
| US2152115A | Dust collector | |
| US2111878A | Means for draining moisture from steam in steam turbines | |
| US2152114A | Dust separator | |
| US2039692A | Dust collector |