David Crenshaw
15Patents
4h-index
8Co-inventors
53Inventor score
Filing activity: Oct 28, 1999 → Mar 12, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6828733B1 | Remote lamp control apparatus | Physics | 50 | Expired |
| US6710546B2 | Remote control test apparatus | Physics | 40 | Expired |
| US6392349B1 | Remote control test apparatus | Physics | 35 | Expired |
| US9609706B2 | Power over Ethernet emergency lighting system and method of detecting power loss of a link segment thereof | Electricity | 7 | Active |
| US7091676B2 | Arc maintenance device for high density discharge lamps including an adaptive wave form monitor | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6756736B2 | Remote control test apparatus | Physics | 2 | Expired |
| US10361583B2 | Power over ethernet emergency lighting system and method of detecting power loss of a link segment thereof | Electricity | 1 | Active |
| US12179416B2 | Manufacturing systems and methods for three-dimensional printing | Emerging Cross-Sectional Technologies | 0 | Active |
| US12194586B2 | Sanding systems, methods, and devices | Performing Operations; Transporting | 0 | Active |
| US10903682B2 | Power over ethernet emergency lighting system and method of detecting power loss of a link segment thereof | Electricity | 0 | Active |
| US11714472B2 | Power over ethernet emergency lighting system and method of detecting power loss of a link segment thereof | Electricity | 0 | Active |
| US9999108B2 | Emergency lighting driver with programmable output power | Electricity | 0 | Active |
| US9941737B2 | Power over ethernet emergency lighting system | Electricity | 0 | Active |
| US12179417B2 | Manufacturing systems and methods for three-dimensional printing | Emerging Cross-Sectional Technologies | 0 | Active |
| US10779380B2 | Power over ethernet exit signage | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.