| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Measurement | |
| #4 | Chemical engineering | |
| #5 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Centrifuges | |
| #2 | Clutches and brakes | |
| #3 | Shafts | |
| #4 | Containers for goods storage | |
| #5 | Time-interval measuring | |
| #6 | Drying solid materials by removing liquid |
| # | Name | Total Patents |
|---|---|---|
| #1 | Williams Frank I | 4 |
| #2 | Tholl John F | 3 |
| #3 | Tholl David M | 1 |
| #4 | Pretto Henry J | 1 |
| #5 | Hargraves James N | 1 |
| #6 | Garland Clarence H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2024113A | Air-cooled brake structure for centrifugal separators | |
| US2018474A | Centrifugal separator | |
| US2028730A | Steady bearing for centrifugal separators | |
| US1966420A | Stabilizer for centrifugal extractors and the like | |
| US1914764A | Centrifugal apparatus | |
| US2122017A | Control apparatus | |
| US1908392A | Dumping receptacle | |
| US1938332A | Method of and apparatus for use in drying | |
| US1863779A | Brake | |
| US1667416A | Safety guard for centrifugal machines | |
| CA612030A | Suspended centrifugal apparatus |