| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 36 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Environmental technology | |
| #3 | Machines | |
| #4 | Machine tools | |
| #5 | Mechanical elements | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Grates | |
| #2 | Casings for combustion chambers | |
| #3 | Combustion residues removal | |
| #4 | Unspecified technologies | |
| #5 | Solid fuel combustion | |
| #6 | Punching metal | |
| #7 | Springs | |
| #8 | Buttons, pins and buckles | |
| #9 | Climate change mitigation in goods production | |
| #10 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Poppenhusen Herman A | 36 |
| #2 | Harrington Joseph | 9 |
| Publication | Filing date | Title |
|---|---|---|
| US1869773A | Dispensing machine | |
| US1586328A | Method and apparatus for combining molten metal with a gas | |
| US1515616A | Method and apparatus for recovering scrap metal | |
| US1199415A | Curtain-fastener. | |
| US1144502A | Elevation-adjusting means for chain grates. | |
| US1128719A | Curtain-fastener. | |
| US1127510A | Drain-trap. | |
| US1073437A | Furnace. | |
| US1014903A | Deflecting-partition for furnaces. | |
| US1114803A | Furnace. | |
| US988027A | Furnace. | |
| US987911A | Furnace. | |
| US996939A | Steam-boiler furnace. | |
| US1027667A | Steam-boiler furnace. | |
| US1064857A | Steam-boiler furnace. | |
| US961528A | Furnace-grate. | |
| US918906A | Rotary pump or motor. | |
| US953396A | Furnace. | |
| US898134A | Process of burning coal. | |
| US901038A | Furnace. |