Richard Howk
20Patents
9h-index
14Co-inventors
72Inventor score
Filing activity: Mar 26, 1987 → May 26, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6142458A | Mixing system for dispersion of gas into liquid media | Performing Operations; Transporting | 42 | Expired |
| US4896971A | Mixing apparatus | Performing Operations; Transporting | 30 | Expired |
| US5925293A | Mixer sparging apparatus | Performing Operations; Transporting | 28 | Expired |
| US6109449A | Mixing system for separation of materials by flotation | Performing Operations; Transporting | 19 | Expired |
| US7473025B1 | Mixing impeller with spiral leading edge | Emerging Cross-Sectional Technologies | 15 | Active |
| US5046245A | Methods of fabricating impeller blades for mixing apparatus | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5511881A | Impeller system and method for enhanced-flow pumping of liquids | Performing Operations; Transporting | 13 | Expired |
| US6896246B2 | Aeration apparatus and method | Performing Operations; Transporting | 11 | Expired |
| US7168848B2 | Axial-pumping impeller apparatus and method for magnetically-coupled mixer | Electricity | 11 | Expired |
| US6997444B2 | Radial disc impeller apparatus and method | Performing Operations; Transporting | 8 | Expired |
| US5005843A | Chuck mechanism for detachably connecting impeller shaft and drive unit of mixing apparatus | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6796707B2 | Dual direction mixing impeller and method | Performing Operations; Transporting | 7 | Expired |
| US5006283A | Mixing system for dispersing a compressible fluid such as gas into liquid in a vessel | Performing Operations; Transporting | 7 | Expired |
| US5501523A | Impeller system for mixing and enhanced-flow pumping of liquids | Performing Operations; Transporting | 6 | Expired |
| US5118199A | Side entry mixer apparatus | Performing Operations; Transporting | 5 | Expired |
| US7331704B2 | Start-up method for draft tube mixing | Performing Operations; Transporting | 4 | Expired |
| US9289733B2 | Mixing apparatus with stationary shaft | Performing Operations; Transporting | 3 | Active |
| US5152934A | Mixing system for gas dispersion in liquids or liquid suspensions | Performing Operations; Transporting | 3 | Expired |
| US5203630A | Side entry fluid mixing | Performing Operations; Transporting | 2 | Expired |
| US10670034B2 | Trimable impeller device and system | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.