Inventor

OUWERKERK MARTIN

NL28 patents

⚠️ This page may combine multiple inventors who share the name “OUWERKERK MARTIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OUWERKERK MARTIN

KONINKLIJKE PHILIPS NV

Mental balance or imbalance estimation system and method

Stress-measuring system

Device for detecting heart rate and heart rate variability

Tailorable sensor device for physiological parameter sensing

System for improving sleep effectiveness of a user

Device, system and method for determining an emotional state of a user

Surface treatment device and method

Dry skin conductance electrode

Circadian phase detection system

Processor for processing skin conductance data and device for detecting at least one stage of burnout and/or chronic fatigue syndrome of a living being

Visit duration control system and method

PHILIPS CORP

Optical switching device comprising switchable hydrides

Potassium-lithium-niobate crystals and the manufacture thereof

Bistable switching device containing gadolinium hydride

Low-pressure mercury discharge lamp

Potassium-lithium niobate crystals

Device for doubling the frequency of a light wave

KONINKL PHILIPS ELECTRONICS NV

Transflective display device

Optical switching device

Metal hydride battery material with high storage capacity

Hydrogen storage material with high storage capacity

OUWERKERK MARTIN

Device for determining a stress level of a person and providing feedback on the basis of the stress level as determined

Wearable device and a method of manufacturing the same

Autonomous wireless die

CROMPVOETS FLORIS MARIA HERMANSZ

Synchronising a heart rate parameter of multiple users

Method and system for determining a physiological condition using a two-dimensional representation of R-R intervals

DE VRIES JAN JOHANNES GERARDUS

Stress-measuring device and method

CORTENRAAD HUBERTUS MARIA RENE

Game board, pawn and system for playing board games