David A. Luce
56Patents
13h-index
15Co-inventors
81Inventor score
Filing activity: Jun 14, 1974 → Jun 20, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7004902B2 | Method and apparatus for measuring biomechanical characteristics of corneal tissue | Human Necessities | 59 | Expired |
| US7771353B2 | Method and apparatus for tear film measurement | Human Necessities | 37 | Active |
| US5587748A | Joystick override control for an ophthalmic instrument | Human Necessities | 34 | Expired |
| US4365533A | Musical instrument | Physics | 33 | Expired |
| US5471260A | Joystick for an ophthalmic instrument where vertical movement is controlled by rotating the joystick | Human Necessities | 32 | Expired |
| US6623429B2 | Hand-held non-contact tonometer | Human Necessities | 27 | Expired |
| US3997863A | Helically wound pitch-determining element for electronic musical instrument | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6042232A | Automatic optometer evaluation method using data over a wide range of focusing positions | Human Necessities | 25 | Expired |
| US6817981B2 | Method for eliminating error in tonometric measurements | Human Necessities | 20 | Expired |
| US4881807A | Optical alignment system | Human Necessities | 19 | Expired |
| US5301004A | Method and apparatus for determining the optical properties of a lens | Physics | 17 | Expired |
| US3974461A | Wide dynamic range voltage controlled filter for electronic musical instruments | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6419631B1 | Non-contact tonometry method | Human Necessities | 15 | Expired |
| US6875175B2 | Duel mode non-contact tonometer | Human Necessities | 13 | Expired |
| US4503745A | Musical instrument | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4334195A | Voltage controlled attenuator | Electricity | 11 | Expired |
| US4099439A | Electronic musical instrument with dynamically responsive keyboard | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4027569A | Keyboard for an electronic musical instrument employing variable capacitors | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6159148A | Non-contact tonometer having non-linear pressure ramp | Human Necessities | 9 | Expired |
| US4046049A | Foot control apparatus for electronic musical instrument | Emerging Cross-Sectional Technologies | 9 | Expired |
| US3981218A | Preset system for electronic musical instrument | Physics | 8 | Expired |
| US5779633A | Tonometer air pulse generator | Human Necessities | 8 | Expired |
| US5825457A | Keratometric illumination system | Human Necessities | 7 | Expired |
| US3991645A | Electronic musical instrument with exponential keyboard and voltage controlled oscillator | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7481767B2 | Method and apparatus for determining true intraocular pressure | Human Necessities | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.