Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
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B41M
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
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5/00
Duplicating or marking methods; Sheet materials for use therein
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B41M5/50
Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
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B41M5/5263
characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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B41M5/5281
Polyurethanes or polyureas
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