Donald Walker
18Patents
5h-index
17Co-inventors
63Inventor score
Filing activity: May 1, 1975 → Jun 30, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9894740B1 | Intelligent lighting module for a lighting fixture | Emerging Cross-Sectional Technologies | 20 | Active |
| US4313033A | Apparatus and method for digital combination of delta modulated data | Electricity | 19 | Expired |
| US10247372B2 | LED troffer lens assembly mount | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US4486746A | Digital system for raster scan display of video and alpha-numerics with single bit map memory | Physics | 6 | Expired |
| USD927027S1 | LED troffer | General | 5 | Active |
| US4322672A | Electric motor control apparatus | Electricity | 5 | Expired |
| US10264657B2 | Intelligent lighting module for a lighting fixture | Emerging Cross-Sectional Technologies | 4 | Active |
| US5954496A | Burner for operating a combustion chamber | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US3989425A | Unitized seal biasing spring assembly for rotary mechanisms | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US3975866A | Method and apparatus for machining housings for slant axis rotary mechanisms | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9547133B2 | LED illuminator for side-emitting optical fibers | Physics | 2 | Active |
| US8475083B2 | Umbilical for underwater diving | Performing Operations; Transporting | 1 | Active |
| USD1013243S1 | LED troffer | General | 1 | Active |
| US3999902A | Slant axis rotary mechanism with relieved apex portions | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US10508797B2 | Luminaire and connection mechanism for connecting multiple luminaires | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10094971B2 | Optic assemblies and fixtures comprising the same | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9191106B2 | Communication system | Electricity | 0 | Active |
| US8356923B2 | Safe lighting system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.