Ronald T. Smith
133Patents
30h-index
72Co-inventors
93Inventor score
Filing activity: Jul 30, 1982 → Nov 3, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5745266A | Quarter-wave film for brightness enhancement of holographic thin taillamp | Emerging Cross-Sectional Technologies | 265 | Expired |
| US5341230A | Waveguide holographic telltale display | Physics | 140 | Expired |
| US4807978A | Color display device and method using holographic lenses | Emerging Cross-Sectional Technologies | 126 | Expired |
| US5278532A | Automotive instrument virtual image display | Physics | 124 | Expired |
| US4968117A | Graded index asperhic combiners and display system utilizing same | Physics | 82 | Expired |
| US5650865A | Holographic backlight for flat panel displays | Physics | 74 | Expired |
| US5013134A | Ghost-free automotive head-up display employing a wedged windshield | Physics | 72 | Expired |
| US4545646A | Process for forming a graded index optical material and structures formed thereby | Emerging Cross-Sectional Technologies | 72 | Expired |
| US4981332A | Dispersion-compensated windshield hologram virtual image display | Physics | 59 | Expired |
| US4960314A | Diffraction optics diffusing screen laminate for full color on-axis viewing | Physics | 56 | Expired |
| US4859492A | Process for forming an environmentally stable optical coating thereby | Chemistry; Metallurgy | 56 | Expired |
| US7783346B2 | Illuminated infusion cannula | Human Necessities | 56 | Active |
| US5053755A | Automotive head-up display with high brightness in daytime and high contrast in nighttime | Physics | 52 | Expired |
| US5016950A | Full-color zero-order suppressed diffraction optics diffusing screen/louver filter laminate | Physics | 51 | Expired |
| US4792236A | Multi-canister tinter with lost-motion coupling | Emerging Cross-Sectional Technologies | 48 | Expired |
| US4586780A | Directional diffusing screen with suppressed zero-order light | Physics | 48 | Expired |
| US6646636B1 | Display system utilizing ambient light and a dedicated light source | Physics | 45 | Expired |
| US5007690A | Holographic data storage and retrieval system | Physics | 44 | Expired |
| US5011244A | Holographic full color data retrieval and projection system | Physics | 40 | Expired |
| US4973132A | Polarized holographic heads up display | Physics | 40 | Expired |
| US5721598A | High efficiency, high color purity, on-axis holographic color filter and full-color liquid crystal display | Physics | 38 | Expired |
| US4586781A | Diffraction optics diffusing screen | Physics | 36 | Expired |
| US5044709A | LED array polarized image source/0 degree hologram virtual image head up display | Physics | 36 | Expired |
| US5101193A | Universal stand-alone holographic center high mounted stoplight | Performing Operations; Transporting | 35 | Expired |
| US5347435A | Linear lamp holographic trapped beam center high mounted stoplight | Emerging Cross-Sectional Technologies | 34 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.