Electronic fluidic indicator and method of indicating

Markku Känsäkoski (Inventor), Antti Kemppainen (Inventor)

Research output: PatentPatent


The invention relates to providing detection of an exposure to a physical or chemical phenomenon and revealing information as a response to the exposure. A microfluidic device (20) comprises a microchannel (22) filled at least partly with at least one substance and a conductor (29) providing an intersection area (23a-23d) with the microchannel (22). As a result of exposure to the physical or chemical phenomenon directed to the microchannel (22) or to the substance in the microchannel (22) the microfluidic device (20) is arranged to control electromagnetic characteristic of the conductor (29) in the intersection area (23a-23d). An indicator device (45) comprises the microfluidic device (20) that is connected to means for indicating (40) to indicate the exposure to the phenomenon by giving a visual, sound, scent and/or electhcomagnetic indication. Further a method for detecting exposure to a physical or chemical phenomenon and indicating the exposure is presented.

Patent family as of 27.9.2021
CN102804242 A 20121128 CN200980163220 20091231      
CN102804242 B 20150211 CN200980163220 20091231      
DE602009039378 D1 20160804 DE200960039378T 20091231      
EP2519938 A1 20121107 EP20090805928 20091231      
EP2519938 B1 20160622 EP20090805928 20091231      
JP2013516636 T2 20130513 JP20120546472T 20091231      
JP5611366 B2 20141022 JP20120546472T 20091231      
KR101719390 B1 20170323 KR20127016946 20091231      
KR20120125241 A 20121114 KR20127016946 20091231      
US2013002438 AA 20130103 US20090519986 20091231      
US9335834 BB 20160510 US20090519986 20091231      
WO11080374 A1 20110707 WO2009FI51051 20091231

Link to current patent family on right 

Original languageEnglish
Patent numberEP2519938
IPCG09F 3/ 03 A I
Priority date31/12/09
Publication statusPublished - 7 Nov 2012
MoE publication typeH1 Granted patent


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