Forming hidden patterns in porous substrates

Tomi Erho (Inventor), Terho Kololuoma (Inventor)

Research output: PatentPatent


The present invention concerns a method for manufacturing patterned porous substrates with hidden color patterns by forming hydrophobic patterns on a hydrophilic surface, wherein structural channels are formed as a pattern in a porous substrate using a hydrophobic printing solution lacking colorant, and wherein a colored area is applied on the rear surface of the porous substrate. Further, the present invention concerns said patterned porous substrate and a method for bringing said pattern into a visible state.

Patent family as of 1.10.2021
BR112013032174A2 20161213 BR20131132174 20120613      
BR112013032174 B1 20210202 BR20131132174 20120613      
CN103747965 A 20140423 CN201280028863 20120613      
CN103747965 B 20170606 CN201280028863 20120613      
DE602012026837 D1 20170202 DE201260026837T 20120613      
DK2720878 T3 20170213 DK20120735924T 20120613      
EP2720878 A1 20140423 EP20120735924 20120613      
EP2720878 B1 20161221 EP20120735924 20120613      
FI123323 B 20130228 FI20110005586 20110614      
FI20115586 A 20121215 FI20110005586 20110614      
FI20115586 A0 20110614 FI20110005586 20110614      
JP2014523820 T2 20140918 JP20140515239T 20120613      
JP6021903 B2 20161109 JP20140515239T 20120613      
KR101976744 B1 20190509 KR20147001031 20120613      
KR20140041738 A 20140404 KR20147001031 20120613      
RU2013157874 A 20150720 RU20130157874 20120613      
RU2605057 C2 20161220 RU20130157874 20120613      
US2014161974 AA 20140612 US20120123103 20120613      
US9868312 BB 20180116 US20120123103 20120613      
WO12172172 A1 20121220 WO2012FI50591 20120613

Link to current patent family on right 

Original languageEnglish
Patent numberEP2720878
IPCB41M 3/ 14 A I
Priority date13/06/12
Publication statusPublished - 23 Apr 2014
MoE publication typeH1 Granted patent


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