Assignee
MARRA JOHAN
NL·7 granted patents·74 citations·filing 2007–2012
Top patents by PatentIndex Score
7 records- 0191US8402815B2Air pollution sensor systemMARRA JOHAN·Filed 2008·Granted Mar 26, 2013·18 cites·12 claims
- 0290US9579664B2Cleaning device for cleaning the air-ionizing part of an electrodeMARRA JOHAN·Filed 2012·Granted Feb 28, 2017·12 cites·10 claims
- 0390US8123840B2Electrostatic particle filterMARRA JOHAN·Filed 2007·Granted Feb 28, 2012·19 cites·12 claims
- 0488US8452489B2Controlling system for controlling an air handling systemMARRA JOHAN·Filed 2008·Granted May 28, 2013·14 cites·9 claims
- 0583US9417207B2Gas sensing apparatusMARRA JOHAN·Filed 2012·Granted Aug 16, 2016·7 cites·15 claims
- 0671US8627733B2Device 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
- 0764US8701466B2Device 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
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