Inventor
MARRA JOHAN
NL16 patents
⚠️ This page may combine multiple inventors who share the name “MARRA JOHAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MARRA JOHAN
7 patentsUS8123840B2Feb 28, 2012
Electrostatic particle filter
MARRA JOHAN19 citations91
US9579664B2Feb 28, 2017
Cleaning device for cleaning the air-ionizing part of an electrode
MARRA JOHAN12 citations83
US8452489B2May 28, 2013
Controlling system for controlling an air handling system
MARRA JOHAN14 citations83
US8402815B2Mar 26, 2013
Air pollution sensor system
MARRA JOHAN18 citations83
US9417207B2Aug 16, 2016
Gas sensing apparatus
MARRA JOHAN7 citations78
US8627733B2Jan 14, 2014
Device for characterizing a size distribution of electrically-charged airborne particles in an air flow
MARRA JOHAN3 citations61
US8701466B2Apr 22, 2014
Device for characterizing the evolution over time of a size distribution of electrically-charged airborne particles in an airflow
MARRA JOHAN1 citations51
KONINKLIJKE PHILIPS NV
5 patentsUS10710098B2Jul 14, 2020
Cleaning device for cleaning an air-ionizing part of an electrode
KONINKLIJKE PHILIPS NV9 citations83
US10859485B2Dec 8, 2020
Particle sensor and sensing method
KONINKLIJKE PHILIPS NV4 citations72
US10364994B2Jul 30, 2019
Air humidification and/or purification
KONINKLIJKE PHILIPS NV4 citations71
US10299623B2May 28, 2019
Coffee dispensing apparatus
KONINKLIJKE PHILIPS NV2 citations70
US9943800B2Apr 17, 2018
Apparatus for gas cleaning
KONINKLIJKE PHILIPS NV0 citations51
KONINKL PHILIPS ELECTRONICS NV
4 patentsUS7722211B2May 25, 2010
Light engine
KONINKL PHILIPS ELECTRONICS NV65 citations95
US7836751B2Nov 23, 2010
Ultra fine particle sensor
KONINKL PHILIPS ELECTRONICS NV24 citations92
US7855449B2Dec 21, 2010
Cooling device for a light-emitting semiconductor device and a method of manufacturing such a cooling device
KONINKL PHILIPS ELECTRONICS NV28 citations88
US7857892B2Dec 28, 2010
Air pollution sensor system
KONINKL PHILIPS ELECTRONICS NV16 citations83