EP 4176383 A2 20230510 - LIQUID DETECTION RFID TAG ARRANGEMENT
Title (en)
LIQUID DETECTION RFID TAG ARRANGEMENT
Title (de)
RFID-ETIKETTANORDNUNG MIT FLÜSSIGKEITSDETEKTION
Title (fr)
ENSEMBLE ÉTIQUETTE RFID POUR LA DÉTECTION DE LIQUIDE
Publication
Application
Priority
- SE 2050830 A 20200702
- IB 2021055901 W 20210701
Abstract (en)
[origin: WO2022003613A2] A liquid and/or moisture detecting RFID tag arrangement (1) comprises a substrate (4, 4'), at least one antenna element (2) arranged on the substrate, and an RFID chip (3) connected to the antenna element(s). At least a part of the substrate forms a water degradable part (4), made of a water degradable material, arranged to dissolve or disintegrate when wetted by a liquid. When the water degradable part disintegrates or dissolves, the response signal from the RFID tag arrangement (1 ) changes, either to cease, or to be of different content or characteristics. The change in response signal can e.g. be accomplished by a main antenna (2) becoming totally or partly inoperative, by a secondary antenna (5) becoming fully or partly inoperative, or by breaking a detection loop (5').
IPC 8 full level
G06K 19/07 (2006.01); G06K 19/073 (2006.01); G06K 19/077 (2006.01)
CPC (source: EP SE)
A61F 13/42 (2013.01 - SE); G01N 27/048 (2013.01 - SE); G01N 27/223 (2013.01 - SE); G06K 19/0723 (2013.01 - EP); G06K 19/0739 (2013.01 - EP); G06K 19/0772 (2013.01 - EP); A61F 2013/426 (2013.01 - SE)
Citation (search report)
See references of WO 2022003613A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022003613 A2 20220106; WO 2022003613 A3 20220210; EP 4176383 A2 20230510; SE 2050830 A1 20220103; SE 544313 C2 20220405
DOCDB simple family (application)
IB 2021055901 W 20210701; EP 21743580 A 20210701; SE 2050830 A 20200702