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FR11 patents
Top patents by PatentIndex Score
US6572295B1Jun 3, 2003
Method for making a writing or coloring pencil by triple extrusion and writing or coloring pencil comprising an intermediate protective layer
CONTE47 citations82
US9988546B2Jun 5, 2018
Colour pencil lead
CONTE8 citations78
US10814665B2Oct 27, 2020
Writing or coloring pencil
CONTE5 citations72
US10316208B2Jun 11, 2019
Pencil for writing or colouring
CONTE3 citations72
US6644880B2Nov 11, 2003
Writing article whose writing tip includes a drying retardant and process for the manufacture of such a tip
CONTE11 citations72
US10308063B2Jun 4, 2019
Paper pencil lead
CONTE5 citations68
US7156573B2Jan 2, 2007
Writing implement fitted with support means for the writing tip
CONTE2 citations61
US7048459B2May 23, 2006
Liquid ink writing instrument with a shape memory valve
CONTE3 citations61
US6893181B1May 17, 2005
Nib and methods of treating an elongate element designed to form such a nib
CONTE3 citations61
US7470079B2Dec 30, 2008
Writing article having a capillary reservoir with improved ink delivery
CONTE4 citations53
US7118618B2Oct 10, 2006
Colored liquid composition for editing pen
CONTE0 citations49