David C. Campbell
87Patents
22h-index
75Co-inventors
91Inventor score
Filing activity: Dec 28, 1977 → Dec 23, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4200862A | Appliance control | Emerging Cross-Sectional Technologies | 198 | Expired |
| US6729413B2 | Power tool with battery pack ejector | Emerging Cross-Sectional Technologies | 104 | Expired |
| US9256988B2 | System and method for identifying a power tool | Emerging Cross-Sectional Technologies | 91 | Active |
| US4638299A | Electrical appliance control | Emerging Cross-Sectional Technologies | 76 | Expired |
| US6219922A | Nozzle assembly for a power tool | Performing Operations; Transporting | 53 | Expired |
| US5624576A | Pelletized composition for treatment of storm water runoff | Emerging Cross-Sectional Technologies | 52 | Expired |
| US6935541B1 | Caulk gun pressurizing system | Emerging Cross-Sectional Technologies | 49 | Expired |
| US7661486B2 | Power tool with battery pack ejector | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5911482A | Window assembly and lower saw guard | Emerging Cross-Sectional Technologies | 42 | Expired |
| US8312937B2 | Battery for a power tool with a battery pack ejector | Emerging Cross-Sectional Technologies | 37 | Active |
| US5850698A | Portable circular saw | Performing Operations; Transporting | 37 | Expired |
| US5794351A | Window assembly and lower saw guard for circular saw | Emerging Cross-Sectional Technologies | 34 | Expired |
| US7404696B2 | Drill driver with chuck-mounted drill accessories | Emerging Cross-Sectional Technologies | 33 | Active |
| US6996510B1 | System and method for modeling communication networks | Electricity | 29 | Expired |
| US8573324B2 | Battery for a power tool | Emerging Cross-Sectional Technologies | 27 | Active |
| US6484409B2 | Pruner attachment apparatus for a power tool | Performing Operations; Transporting | 26 | Expired |
| US8181717B2 | Power tool with battery pack ejector | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6892169B1 | System and method for automatically designing communications circuits | Electricity | 24 | Expired |
| US7415777B2 | Simple controller for a power operated tape measure | Physics | 23 | Active |
| US7824136B2 | Drill driver with chuck-mounted drill accessories | Emerging Cross-Sectional Technologies | 22 | Active |
| US7475842B2 | Tape measure utilizing mechanical decoupling of power tape extension feature for tape retraction | Physics | 22 | Active |
| US6042310A | Bit attaching arrangement for power tool | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5822864A | Viewing window for circular saw guard | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5930903A | Portable circular saw | Performing Operations; Transporting | 21 | Expired |
| US7174655B1 | Dual purpose light for automatic tape measure | Physics | 21 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.