David K. Booth
16Patents
11h-index
10Co-inventors
65Inventor score
Filing activity: Sep 16, 1994 → Oct 31, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7274356B2 | Apparatus for determining the location of a pointer within a region of interest | Physics | 87 | Expired |
| US6273567A | Compact multi-path LCD projector | Electricity | 39 | Expired |
| US5973833A | High efficiency polarizing converter | Physics | 31 | Expired |
| US5836664A | LCD projector with shift and tilt field lens | Electricity | 25 | Expired |
| US5868481A | Centrifugal illumination system | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5622417A | Invertible and orthoscopic liquid crystal display projector | Electricity | 21 | Expired |
| US6254237A | Multi-pixel microlens illumination in electronic display projector | Physics | 20 | Expired |
| US5642927A | LCD projector with retractable projection lens assembly | Electricity | 19 | Expired |
| US5682216A | LCD projector capable of preventing thermal shimmering by using a thermal diffusion film | Physics | 18 | Expired |
| US7075445B2 | Rapidly responding, false detection immune alarm signal producing smoke detector | Physics | 17 | Expired |
| US5742438A | Projection illumination system | Physics | 16 | Expired |
| US5738427A | Projector cooling system | Physics | 8 | Expired |
| US6111618A | LCD projector illumination system having blue and red dichroic mirrors positioned such that blue mirror receives light before red mirror | Physics | 6 | Expired |
| US8456418B2 | Apparatus for determining the location of a pointer within a region of interest | Physics | 6 | Active |
| US8274496B2 | Dual mode touch systems | Physics | 6 | Active |
| US5628553A | Projector illumination system | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.