Benjamin R. Du
30Patents
14h-index
15Co-inventors
78Inventor score
Filing activity: Sep 30, 1982 → Mar 7, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5158210A | Condiment dispensing device | Performing Operations; Transporting | 59 | Expired |
| US6099264A | Pump controller | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6343539B1 | Multiple layer pump diaphragm | Mechanical Engineering; Lighting; Heating | 54 | Expired |
| US5230443A | Condiment dispensing device | Performing Operations; Transporting | 49 | Expired |
| US5170912A | Proportioning pump | Performing Operations; Transporting | 42 | Expired |
| US5361943A | Condiment dispensing device | Performing Operations; Transporting | 42 | Expired |
| US5435466A | Condiment dispensing device | Performing Operations; Transporting | 40 | Expired |
| US4467941A | Apparatus and method for dispensing beverage syrup | Performing Operations; Transporting | 40 | Expired |
| US6325604A | Plastic gear pump housing | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US5350083A | Condiment dispensing device | Performing Operations; Transporting | 36 | Expired |
| US5664940A | Gas driven pump | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4540349A | Air driven pump | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US4957220A | Vending machine last drink sensor and dispensing apparatus | Performing Operations; Transporting | 19 | Expired |
| US5188255A | Method and apparatus for facilitating the cleaning of a spray aperture in a mixing chamber of a nozzle | Performing Operations; Transporting | 14 | Expired |
| US6062427A | Beer keg and pre-mixed beverage tank change-over device | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5540556A | Positive displacement pump including modular pump component | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5833439A | Slide valve of a gas driven pump | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5749709A | Positive displacement pump including modular pump component | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5613834A | Positive displacement pump including modular pump component | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5083906A | Fluid pump | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US9316214B2 | Bag in box beverage pump | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8550794B2 | Double acting fluid pump | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US11153321B2 | Secure investigations platform | Physics | 2 | Active |
| US11212300B2 | Secure incident investigation event capture | Electricity | 2 | Active |
| US11792301B1 | Parallelized automated creation of proxy manifests | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.