Mark Norris
40Patents
25h-index
47Co-inventors
85Inventor score
Filing activity: Nov 30, 1994 → Sep 23, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6720734B2 | Oximeter with nulled op-amp current feedback | Human Necessities | 1,164 | Expired |
| US6668183B2 | Diode detection circuit | Human Necessities | 216 | Expired |
| US6397092B1 | Oversampling pulse oximeter | Human Necessities | 186 | Expired |
| US6505060B1 | Method and apparatus for determining pulse oximetry differential values | Human Necessities | 170 | Expired |
| US6505133B1 | Simultaneous signal attenuation measurements utilizing code division multiplexing | Human Necessities | 170 | Expired |
| US6363269B1 | Synchronized modulation/demodulation method and apparatus for frequency division multiplexed spectrophotometric system | Human Necessities | 164 | Expired |
| US6778923B2 | Reduced cross talk pulse oximeter | Human Necessities | 164 | Expired |
| US6825619B2 | Feedback-controlled LED switching | Human Necessities | 159 | Expired |
| US6748253B2 | Oversampling pulse oximeter | Human Necessities | 153 | Expired |
| US7062307B2 | Oversampling pulse oximeter | Human Necessities | 114 | Expired |
| US8285387B2 | Wireless communication with a medical implant | Electricity | 103 | Active |
| US6707257B2 | Ferrite stabilized LED drive | Human Necessities | 102 | Expired |
| US6381479B1 | Pulse oximeter with improved DC and low frequency rejection | Human Necessities | 101 | Expired |
| US5845236A | Hybrid active-passive noise and vibration control system for aircraft | Physics | 76 | Expired |
| US5526292A | Broadband noise and vibration reduction | Physics | 63 | Expired |
| US7515949B2 | Wavelet transform of a plethysmographic signal | Human Necessities | 60 | Active |
| US6002778A | Active structural control system and method including active vibration absorbers (AVAS) | Physics | 44 | Expired |
| US5906254A | Active systems and devices including active vibration absorbers (AVAS) | Mechanical Engineering; Lighting; Heating | 43 | Expired |
| USD819052S1 | Electronic display with a graphical user interface | General | 40 | Active |
| US8700260B2 | Land vehicles and systems with controllable suspension systems | Performing Operations; Transporting | 36 | Active |
| US6296093A | Vibration-damped machine and control method therefor | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5754662A | Frequency-focused actuators for active vibrational energy control systems | Physics | 34 | Expired |
| US5713438A | Method and apparatus for non-model based decentralized adaptive feedforward active vibration control | Physics | 31 | Expired |
| US5961899A | Vibration control apparatus and method for calender rolls and the like | Performing Operations; Transporting | 29 | Expired |
| US6467723B1 | Active vibration control system for helicopter with improved actustor placement | Performing Operations; Transporting | 25 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.