David C. Smith
56Patents
14h-index
33Co-inventors
84Inventor score
Filing activity: Nov 12, 1980 → Jun 16, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7893875B1 | Device for and method of geolocation | Physics | 163 | Active |
| US6791432B2 | Left handed composite media | Emerging Cross-Sectional Technologies | 73 | Expired |
| US4502467A | Compact attic mounted solar heating pack assembly | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US6983062B2 | Fingerprint scanner auto-capture system and method | Physics | 41 | Expired |
| US5144294A | Radio frequency message apparatus for aiding ambulatory travel of visually impaired persons | Human Necessities | 39 | Expired |
| US6688303B2 | Method and system for controlling operation of an energy conversion device | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4647772A | Mass spectrometers | Electricity | 27 | Expired |
| US5144299A | Telemetry power carrier pulse encoder | Physics | 27 | Expired |
| US5157684A | Optically pulsed laser | Electricity | 24 | Expired |
| US5017419A | Non-moire shielded window | Emerging Cross-Sectional Technologies | 21 | Expired |
| USRE32607E | Compact attic mounted solar heating pack assembly | General | 20 | Expired |
| US5834053A | Blue light emitting thiogallate phosphor | Chemistry; Metallurgy | 20 | Expired |
| US4638622A | Safety roller assembly for bracket mounting to the top or rear face of rotary lawn mower deck | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5084132A | Non-moire' shielded window forming method | Electricity | 18 | Expired |
| US6591614B2 | Kinetic cooling and heating | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US7350447B1 | Counter-mining using laser induced pressure wave | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6596209B2 | Production of particle board from agricultural waste | Performing Operations; Transporting | 11 | Expired |
| US6547158B1 | Apparatus for applying line striping chemicals and reflective beads to a surface | Fixed Constructions | 11 | Expired |
| US4598709A | Electrolysis machine | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4426843A | CO.sub.2 Coupling material | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5831769A | Protecting eyes and instruments from laser radiation | Human Necessities | 9 | Expired |
| US6282894A | Engines driven by laser kinetic cooling | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6028723A | Protecting eyes and instruments from short pulse laser radiation | Human Necessities | 8 | Expired |
| US6377403B1 | Short pulse laser protection fly's eye lens | Physics | 8 | Expired |
| US6996259B2 | System and method for counting ridges in a captured print image | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.