Patent classifications
G
PHYSICS
Load children
G06
COMPUTING OR CALCULATING; COUNTING
Load children
G06K
GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
Load children
19/00
Record carriers for use with machines and with at least a part designed to carry digital markings
Load children Filter patents View analytics View as hierarchy
G06K19/06
characterised by the kind of the digital marking, e.g. shape, nature, code
Load children Filter patents View analytics View as hierarchy
G06K19/067
Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards; also with resonating or responding marks without active components
Load children Filter patents View analytics View as hierarchy
G06K19/07
with integrated circuit chips
Load children Filter patents View analytics View as hierarchy
G06K19/073
Special arrangements for circuits, e.g. for protecting identification code in memory
Load children Filter patents View analytics View as hierarchy
G06K19/07309
Means for preventing undesired reading or writing from or onto record carriers
Load children Filter patents View analytics View as hierarchy
G06K19/07372
by detecting tampering with the circuit
Load children Filter patents View analytics View as hierarchy