David Rich
27Patents
12h-index
27Co-inventors
81Inventor score
Filing activity: Feb 14, 1986 → Nov 10, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5307517A | Adaptive notch filter for FM interference cancellation | Electricity | 300 | Expired |
| US5939904A | Method and apparatus for controlling the common-mode output voltage of a differential buffer | Electricity | 131 | Expired |
| US5646518A | PTAT current source | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5745061A | Method of improving the stability of a sigma-delta modulator employing dither | Electricity | 29 | Expired |
| US4937577A | Integrated analog-to-digital converter | Physics | 23 | Expired |
| US6404364B1 | Multistage converter employing digital dither | Electricity | 19 | Expired |
| US7498876B2 | Amplifier having half-wave tracking power rails | Electricity | 19 | Active |
| US4860012A | Integrated analog-to-digital converter | Electricity | 18 | Expired |
| US4796004A | Integrated analog-to-digital converter | Electricity | 18 | Expired |
| US6355881B1 | Means for sealing an electronic or optical component within an enclosure housing | Electricity | 16 | Expired |
| US5847556A | Precision current source | Physics | 15 | Expired |
| USD748274S1 | Nasal alar photoplethysmography probe housing | General | 13 | Active |
| US10390715B2 | Photoplethysmography sensors | Human Necessities | 12 | Active |
| US5675352A | Liquid crystal display driver | Physics | 12 | Expired |
| US5530442A | Circuit and method for testing a dithered analog-to-digital converter | Electricity | 11 | Expired |
| US9724002B2 | Methods, devices and systems for photoplethysmography at the nasal columella | Human Necessities | 11 | Active |
| US6832383B2 | MEMS disk drive and method of manufacture therefor | Physics | 5 | Expired |
| US10420490B2 | Systems and methods for physiological monitoring using multiple signal processing devices | Human Necessities | 2 | Active |
| US11229832B2 | Overlay systems and methods of installing overlay systems | Performing Operations; Transporting | 0 | Active |
| US11852194B2 | Solenoid low friction bearing liner | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10120718B2 | Reservation of hardware resources in a computer system based on utilization measurements during time ranges | Physics | 0 | Active |
| US12157292B2 | Multilayer composite article | Performing Operations; Transporting | 0 | Active |
| US11980805B2 | Overlay systems and methods of installing overlay systems | Performing Operations; Transporting | 0 | Active |
| US11220120B2 | Printer assembly low friction roller liner | Performing Operations; Transporting | 0 | Active |
| US12247619B2 | Solenoid low friction bearing liner | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.