Michael A. Schappert
37Patents
13h-index
28Co-inventors
81Inventor score
Filing activity: Dec 9, 1986 → Mar 16, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6057903A | Liquid crystal display device employing a guard plane between a layer for measuring touch position and common electrode layer | Physics | 207 | Expired |
| US6204897A | Integrated resistor for measuring touch position in a liquid crystal display device | Physics | 142 | Expired |
| US6177918A | Liquid crystal display device employing a guard plane between a layer for measuring touch position and common electrode layer | Physics | 137 | Expired |
| US6650313B2 | Method and adapter for performing assistive motion data processing and/or button data processing external to a computer | Physics | 127 | Expired |
| US6064753A | System and method for distortion control in live-scan inkless fingerprint images | Physics | 123 | Expired |
| US6529189B1 | Touch screen stylus with IR-coupled selection buttons | Physics | 102 | Expired |
| US6727887B1 | Wireless pointing device for remote cursor control | Electricity | 53 | Expired |
| US8680845B2 | Non-contact current and voltage sensor | Physics | 32 | Active |
| US9063184B2 | Non-contact current-sensing and voltage-sensing clamp | Physics | 31 | Active |
| US5949402A | Optical alignment method for pointing devices | Physics | 26 | Expired |
| US9007077B2 | Flexible current and voltage sensor | Physics | 24 | Active |
| US4845684A | Acoustic contact sensor for handwritten computer input | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6710346B2 | Active infrared presence sensor | Physics | 13 | Expired |
| US6154200A | Computer input stylus and system | Physics | 10 | Expired |
| US8390306B2 | Corrosion sensors | Physics | 6 | Active |
| US9173353B2 | Irrigation system | Emerging Cross-Sectional Technologies | 6 | Active |
| US9173354B2 | Irrigation system and method | Performing Operations; Transporting | 5 | Active |
| US9241449B2 | Irrigation system | Emerging Cross-Sectional Technologies | 5 | Active |
| US8949040B2 | Methods and apparatus for managing corrosion in buildings | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US9179610B2 | Controllable emitter | Performing Operations; Transporting | 4 | Active |
| US9167757B2 | Irrigation system and method | Performing Operations; Transporting | 4 | Active |
| US9322854B2 | Non-contact current and voltage sensing method using a clamshell housing and a ferrite cylinder | Physics | 3 | Active |
| US8723534B2 | Methods and apparatus for detection of gaseous corrosive contaminants | Emerging Cross-Sectional Technologies | 3 | Active |
| US9877438B2 | Segmented variable rate drip irrigation | Emerging Cross-Sectional Technologies | 2 | Active |
| US9575040B2 | Methods and apparatus for detection of gaseous corrosive contaminants | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.