| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Packaging and shipping | |
| #3 | Thermal processes | |
| #4 | Machine tools | |
| #5 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Allen Frank B | 12 |
| #2 | Hoff Leigh P | 2 |
| #3 | Striegel Leslie E | 1 |
| #4 | Sherman Max C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1634228A | Ash-handling equipment | |
| US1754775A | Lining border | |
| US1694635A | Sluiceway nozzle | |
| US1613601A | Sluiceway construction | |
| US1561762A | Wall construction | |
| US1598233A | System for handling solid material | |
| US1633562A | Hopper construction | |
| US1560361A | Fluid method and apparatus for controlling and removing material from hoppers | |
| US1561761A | Ash gate | |
| US1679549A | Ash gate | |
| US1668796A | Ash gate | |
| US1584295A | Hopper construction | |
| US1561293A | Ash-hopper construction | |
| CA271033A | Fluid method and apparatus for controlling and removing material from hoppers | |
| CA279489A | Sluiceway construction |