| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | United Kingdom | 3 | |
| #3 | Germany | 2 | |
| #4 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Basic materials chemistry | |
| #5 | Chemical engineering | |
| #6 | Machine tools | |
| #7 | Thermal processes | |
| #8 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Henry Howard | 4 |
| #2 | Howard Henry | 2 |
| #3 | Reed James A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1982518A | Scale prevention | |
| US1940753A | Method of heating settling liquids | |
| US1892839A | Means for measuring and controlling the density of suspensions of solids in liquids | |
| US1206248A | Excavating apparatus. | |
| US1142958A | Measuring instrument. |