Assignee

SU SHANCHUAN

DE·2 granted patents·6 citations·filing 2008–2011

Technology mixG07D2 G06K1

Top patents by PatentIndex Score

2 records

0176US8837804B2Method and device for testing value documentsSU SHANCHUAN·Filed 2008·Granted Sep 16, 2014·6 cites·22 claims
0240US9147108B2Method for checking an optical security feature of a value documentSU SHANCHUAN·Filed 2011·Granted Sep 29, 2015·0 cites·22 claims

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