![]() 229910052582 BN Inorganic materials 0.000 claims description 23.238000004040 coloring Methods 0.000 claims abstract description 9.239000011230 binding agent Substances 0.000 claims abstract description 30.239000000314 lubricant Substances 0.000 claims abstract description 36.239000000945 filler Substances 0.000 claims abstract description 45.239000000463 material Substances 0.000 claims abstract description 47.239000003086 colorant Substances 0.000 claims abstract description 47.238000004519 manufacturing process Methods 0.000 title claims description 5.Assignors: Barroso, Vladimir, Merola, Eder D.J., Atassio, Marcel Prado, APPEL, REINER, LUGERT, GERHARD Publication of US20190100673A1 publication Critical patent/US20190100673A1/en Application granted granted Critical Publication of US10711151B2 publication Critical patent/US10711151B2/en Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to EP17194226.1A priority Critical patent/EP3461869B1/en Priority to EP17194226 priority Priority to EP17194226.1 priority Application filed by Faber Castell AG filed Critical Faber Castell AG Assigned to FABER-CASTELL AG reassignment FABER-CASTELL AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Faber Castell AG Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Merola Marcel Prado Atassio Reiner Appel Gerhard Lugert Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number US16/148,062 Other versions US10711151B2 Google Patents Colored lead or colored chalk, pencil containing a colored lead, and process for preparing a colored lead or colored chalkÄownload PDF Info Publication number US20190100673A1 US20190100673A1 US16/148,062 US201816148062A US2019100673A1 US 20190100673 A1 US20190100673 A1 US 20190100673A1 US 201816148062 A US201816148062 A US 201816148062A US 2019100673 A1 US2019100673 A1 US 2019100673A1 Authority US United States Prior art keywords lead colored chalk proportion weight Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US20190100673A1 - Colored lead or colored chalk, pencil containing a colored lead, and process for preparing a colored lead or colored chalk US20190100673A1 - Colored lead or colored chalk, pencil containing a colored lead, and process for preparing a colored lead or colored chalk
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