Inventor · disambiguated record
Johan Marra
Also filed as: MARRA JOHAN
16 granted patents·11 pending applications·226 citations·filing 2005–2017
93Inventor score
Top patents by PatentIndex Score
27 records- 0196US10710098B2Cleaning device for cleaning an air-ionizing part of an electrodeKONINKLIJKE PHILIPS NV·Filed 2017·Granted Jul 14, 2020·9 cites·9 claims
- 0293US7836751B2Ultra fine particle sensorKONINKL PHILIPS ELECTRONICS NV·Filed 2006·Granted Nov 23, 2010·24 cites·19 claims
- 0391US8402815B2Air pollution sensor systemMARRA JOHAN·Filed 2008·Granted Mar 26, 2013·18 cites·12 claims
- 0491US7855449B2Cooling device for a light-emitting semiconductor device and a method of manufacturing such a cooling deviceKONINKL PHILIPS ELECTRONICS NV·Filed 2006·Granted Dec 21, 2010·28 cites·5 claims
- 0591US7722211B2Light engineKONINKL PHILIPS ELECTRONICS NV·Filed 2005·Granted May 25, 2010·65 cites·16 claims
- 0690US9579664B2Cleaning device for cleaning the air-ionizing part of an electrodeMARRA JOHAN·Filed 2012·Granted Feb 28, 2017·12 cites·10 claims
- 0790US8123840B2Electrostatic particle filterMARRA JOHAN·Filed 2007·Granted Feb 28, 2012·19 cites·12 claims
- 0889US10859485B2Particle sensor and sensing methodKONINKLIJKE PHILIPS NV·Filed 2016·Granted Dec 8, 2020·4 cites·14 claims
- 0989US7857892B2Air pollution sensor systemKONINKL PHILIPS ELECTRONICS NV·Filed 2005·Granted Dec 28, 2010·16 cites·19 claims
- 1088US8452489B2Controlling system for controlling an air handling systemMARRA JOHAN·Filed 2008·Granted May 28, 2013·14 cites·9 claims
- 1186US10364994B2Air humidification and/or purificationKONINKLIJKE PHILIPS NV·Filed 2016·Granted Jul 30, 2019·4 cites·15 claims
- 1283US9417207B2Gas sensing apparatusMARRA JOHAN·Filed 2012·Granted Aug 16, 2016·7 cites·15 claims
- 1374US10299623B2Coffee dispensing apparatusKONINKLIJKE PHILIPS NV·Filed 2015·Granted May 28, 2019·2 cites·15 claims
- 1471US8627733B2Device for characterizing a size distribution of electrically-charged airborne particles in an air flowMARRA JOHAN·Filed 2008·Granted Jan 14, 2014·3 cites·7 claims
- 1564US8701466B2Device for characterizing the evolution over time of a size distribution of electrically-charged airborne particles in an airflowMARRA JOHAN·Filed 2009·Granted Apr 22, 2014·1 cites·13 claims
- 1652US9943800B2Apparatus for gas cleaningKONINKLIJKE PHILIPS NV·Filed 2013·Granted Apr 17, 2018·0 cites·10 claims
- 1751US2008251434A1Manually Operable Water Purifying DeviceKONINKL PHILIPS ELECTRONICS NV·Filed 2006·Application pending·0 cites
- 1850US2008092742A1Air Pollution Sensor SystemKONINKL PHILIPS ELECTRONICS NV·Filed 2005·Application pending·0 cites
- 1950US2015122131A1Method and device for grinding coffee beansKONINKL PHILIPS NV·Filed 2013·Application pending·0 cites
- 2047US2016192806A1Coffee machine for providing coffee brew with reduced caffeine contentKONINKL PHILIPS NV·Filed 2014·Application pending·0 cites
- 2142US2018236399A1Gas filtration system and methodKONINKLIJKE PHILIPS NV·Filed 2016·Application pending·0 cites
- 2241US2008198292A1Lighting DeviceKONINKL PHILIPS ELECTRONICS NV·Filed 2006·Application pending·0 cites
- 2340US2018283707A1Gas filtration system and methodKONINKLIJKE PHILIPS NV·Filed 2016·Application pending·0 cites
- 2439US2017326493A1Pleated filter structure for air cleaning and air filtering methodKONINKLIJKE PHILIPS NV·Filed 2015·Application pending·0 cites
- 2539US2018185530A1Surface treatment deviceKONINKLIJKE PHILIPS NV·Filed 2016·Application pending·0 cites
- 2636US2009236960A1Electric lamp and interference filmKONINKL PHILIPS ELECTRONICS NV·Filed 2006·Application pending·0 cites
- 2736US2017154517A1Air quality alert system and methodKONINKLIJKE PHILIPS NV·Filed 2015·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Johan Marra files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →