David Campbell
34Patents
14h-index
29Co-inventors
81Inventor score
Filing activity: May 22, 1975 → Mar 18, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6365502B1 | Microelectronic interconnect material with adhesion promotion layer and fabrication method | Electricity | 94 | Expired |
| US6624542B1 | Flywheel power source with passive generator cooling | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6627995B2 | Microelectronic interconnect material with adhesion promotion layer and fabrication method | Electricity | 42 | Expired |
| US6645847B2 | Microelectronic interconnect material with adhesion promotion layer and fabrication method | Electricity | 37 | Expired |
| US6461675B2 | Method for forming a copper film on a substrate | Electricity | 34 | Expired |
| US6825588B2 | Uninterruptible power supply using a high speed cylinder flywheel | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6727616B1 | Flywheel energy storage system with quill stabilizer | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6585490B1 | Vacuum regeneration method for a flywheel system | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5180272A | Device and method for outloading bulk materials | Performing Operations; Transporting | 21 | Expired |
| US5098247A | Device and method for outloading bulk materials | Performing Operations; Transporting | 18 | Expired |
| US7053589B2 | Long-life vacuum system for energy storage flywheels | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6798092B1 | Low outgas flywheel motor/generator | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5449263A | Device and method for torque assist of drag arm | Performing Operations; Transporting | 15 | Expired |
| US4714151A | Apparatus for supporting and enclosing conveyor systems | Performing Operations; Transporting | 14 | Expired |
| US4170293A | Enclosed conveyor | Performing Operations; Transporting | 11 | Expired |
| USD564002S1 | 360 degree geospatial view telescope | General | 10 | Expired |
| US3993184A | Cable conveyor | Performing Operations; Transporting | 10 | Expired |
| US11101056B1 | Low-profile cable armor | Electricity | 8 | Active |
| US7066050B1 | Life counter for flywheel energy storage systems | Emerging Cross-Sectional Technologies | 8 | Expired |
| US11282619B2 | Low-profile cable armor | Electricity | 7 | Active |
| USD935731S1 | Low-profile cable armor | General | 4 | Active |
| US7962089B1 | Method and system of supporting policy based operations for narrowband tactical radios | Electricity | 3 | Active |
| US11587699B2 | Low-profile cable armor | Electricity | 3 | Active |
| USD996374S1 | Low-profile cable armor | General | 2 | Active |
| US8443516B2 | Process for refurbishing cylinder rolls and bases for printing machines | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.