| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 3 | |
| #3 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Thermal processes | |
| #3 | Basic materials chemistry | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Building materials | |
| #2 | Furnaces | |
| #3 | Steam generation | |
| #4 | Producer gas production | |
| #5 | Climate change mitigation in wastewater treatment | |
| #6 | Metal production and refining |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wechter Eugene J | 7 |
| #2 | Harry Lemmon James | 2 |
| #3 | Baylor Harry D | 1 |
| #4 | Speed William S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1957415A | Production of cement | |
| US1832069A | Method of roasting ores | |
| US1912810A | Apparatus for burning lime and cement | |
| US1912811A | Method of burning lime and cement | |
| US1544421A | Plaster | |
| US1606850A | Method of and apparatus for utilizing heat from cement clinkers | |
| US1533929A | Gas producer | |
| US1401481A | Kiln | |
| CA281510A | Lime and block burning apparatus | |
| CA309068A | Method of roasting ores | |
| CA281511A | Lime and block burning process |