| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 26 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Materials and metallurgy | |
| #4 | Foods and drinks | |
| #5 | Mechanical elements | |
| #6 | Machine tools | |
| #7 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Drying solid materials by removing liquid | |
| #2 | Unspecified technologies | |
| #3 | Foundry moulding | |
| #4 | Beer | |
| #5 | Separation | |
| #6 | Shafts | |
| #7 | Grinding or polishing devices | |
| #8 | Venting or aerating devices | |
| #9 | Domestic heating systems | |
| #10 | Spraying devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dornfeld John F | 27 |
| Publication | Filing date | Title |
|---|---|---|
| US2049199A | Drying apparatus | |
| US1282775A | Boiler. | |
| US1233561A | Clutch. | |
| US1146139A | Malting apparatus. | |
| US1066088A | Malt-turning machine. | |
| US905156A | Clutch. | |
| US941442A | Valve for steep-tanks. | |
| US933165A | Malt-house. | |
| US966669A | Malt-kiln. | |
| US879751A | Cut-off slide. | |
| US890031A | Malting-kiln. | |
| US944127A | Malting apparatus. | |
| US816716A | Dumping-floor. | |
| US850216A | Spraying-nozzle. | |
| US850215A | Valve for steep-tanks. | |
| US850214A | Dumping-floor. | |
| US803675A | Malting apparatus. | |
| US815275A | Malt-stirring apparatus. | |
| US798886A | Rotatory drum. | |
| CA79448A | Malting drum |