Smith Engineering Company
38Patents
0Active
38Granted
38Portfolio score
Filing activity: Aug 16, 1976 → Oct 16, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4462076A | Video game cartridge recognition and security system | Physics | 256 | Expired |
| US4846693A | Video based instructional and entertainment system using animated figure | Human Necessities | 178 | Expired |
| US5779576A | Throw-measuring football | Human Necessities | 166 | Expired |
| US5394168A | Dual-mode hand-held game controller | Human Necessities | 161 | Expired |
| US4359222A | Hand-held electronic game playing device with replaceable cartridges | Electricity | 151 | Expired |
| US4408103A | Joystick operated multiple position switch | Physics | 72 | Expired |
| US4500879A | Circuitry for controlling a CRT beam | Physics | 56 | Expired |
| US4786967A | Interactive video apparatus with audio and video branching | Electricity | 54 | Expired |
| US5796387A | Positioning system using infrared radiation | Human Necessities | 51 | Expired |
| US4875096A | Encoding of audio and digital signals in a video signal | Electricity | 47 | Expired |
| US4349196A | Computer control toy track system | Human Necessities | 40 | Expired |
| US4398086A | Game-calculator having sliding mask | Human Necessities | 32 | Expired |
| USD348083S | Video game controller | General | 31 | Expired |
| US5401025A | Remote control system for raster scanned video display | Human Necessities | 31 | Expired |
| US5043646A | Remote control direction selecting system | Physics | 27 | Expired |
| US5351969A | Remote control system for raster scanned video display | Human Necessities | 27 | Expired |
| US5871349A | Rotary valve thermal oxidizer | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US5067079A | Interactive audio baseball game | Human Necessities | 26 | Expired |
| US5453259A | Two-bed regenerative thermal oxidizer with trap for volatile organic compounds | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4133374A | Heat exchanger | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5277429A | Game assembly utilizing sound identification for moves on a game board | Human Necessities | 23 | Expired |
| US5026277A | Regenerative thermal incinerator apparatus | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| USD274631S | Hand control unit for video arcade game | General | 19 | Expired |
| US4504062A | Digital watch having matrix display for arcade-like game playing | Electricity | 18 | Expired |
| US5098286A | Regenerative thermal incinerator apparatus | Mechanical Engineering; Lighting; Heating | 17 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.