| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 36 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Chemical engineering | |
| #3 | Machines | |
| #4 | Thermal processes | |
| #5 | Materials and metallurgy | |
| #6 | Machine tools | |
| #7 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Non-positive-displacement pumps | |
| #3 | Unspecified technologies | |
| #4 | Furnaces | |
| #5 | Details of furnaces | |
| #6 | Unspecified technologies | |
| #7 | Metal tempering | |
| #8 | Supplying combustion engines | |
| #9 | Making metal sheets | |
| #10 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carl Nygren | 13 |
| #2 | Nash Burckhalter Robert | 11 |
| #3 | Henning Klouman | 6 |
| #4 | Menough Paul S | 4 |
| #5 | Marshall Osburn James | 4 |
| #6 | Sullivan William B | 2 |
| #7 | Haworth Jr Roy D | 1 |
| #8 | Nygren Carl | 1 |
| #9 | Marshall Joseph K | 1 |
| #10 | Whiteside Lawson H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2589093A | Coiling reel for steckel mills | |
| US2529168A | Conveyer chain | |
| US2508333A | Centrifugal ball peening machine | |
| US2457265A | High-temperature fan | |
| US2473814A | High-temperature fan | |
| US2473813A | High-temperature fan | |
| US2441121A | High-temperature fan | |
| US2457711A | High-temperature fan | |
| US2457264A | High-temperature fan | |
| US2428765A | High-temperature fan | |
| US2385838A | High temperature fan | |
| US2385837A | High temperature fan | |
| US2415033A | Centrifugal fan | |
| US2413645A | Stuffing box for water-cooled shafts | |
| US2287740A | Tray for heat treating furnaces | |
| US2253685A | Filter | |
| US2253686A | Filter | |
| US2253684A | Filter | |
| US2203668A | Oil filter | |
| US2152076A | High temperature shaft or roll |