| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | United Kingdom | 4 | |
| #3 | United States | 4 | |
| #4 | France | 2 | |
| #5 | Sweden | 2 | |
| #6 | Australia | 1 | |
| #7 | Italy | 1 | |
| #8 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Measurement | |
| #3 | Electrical machinery and energy | |
| #4 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Analysing materials | |
| #3 | Electric discharge tubes | |
| #4 | Television |
| # | Name | Total Patents |
|---|---|---|
| #1 | Huffman Lowell E | 2 |
| #2 | Huffman Lowell Evan | 2 |
| #3 | Graham Harold E | 1 |
| #4 | E Van Huffman Lowell | 1 |
| #5 | Edward Graham Harold | 1 |
| #6 | Breton Ernest J | 1 |
| #7 | Barnwell James W | 1 |
| #8 | O Neukomm Harry | 1 |
| #9 | Huffman L | 1 |
| #10 | Neukomm H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4448757A | Process for removing contaminants from compressed air | |
| US3850592A | Heat pump dryer | |
| US3585808A | Method and apparatus for drying compressed gases | |
| US3505783A | Heatless drying system | |
| GB1030912A | Improvements in or relating to the filtering of gaseous fluids |