David W. Berg
13Patents
11h-index
18Co-inventors
69Inventor score
Filing activity: Aug 25, 1975 → Jun 14, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6070679A | Powered utility cart having engagement adapters | Emerging Cross-Sectional Technologies | 77 | Expired |
| US5088149A | Vacuum powered scrub head | Human Necessities | 46 | Expired |
| US6117200A | Electromagnetic filter cleaning system | Performing Operations; Transporting | 45 | Expired |
| US6096383A | Curing of floor coatings using long and short wave ultraviolet radiation | Performing Operations; Transporting | 26 | Expired |
| US4729141A | Disc brush suspension for a floor maintenance machine | Fixed Constructions | 22 | Expired |
| USD273620S | Power sweeper | General | 21 | Expired |
| US6125495A | Variable diameter cleaning brush | Human Necessities | 20 | Expired |
| US4121840A | Seal assembly | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4057257A | Seal assembly | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5940929A | Surface maintenance machine with improved dust collection system | Human Necessities | 11 | Expired |
| US5884353A | Sweeper with hopper heat shield | Fixed Constructions | 11 | Expired |
| US4053036A | Wheel brake assembly | Emerging Cross-Sectional Technologies | 4 | Expired |
| US11083942B2 | Flag release system and method | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.