The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2004
Filed:
Apr. 15, 2003
Applicant:
Inventors:
Assignee:
Schwan-Stabilo Cosmetics GmbH & Co. KG, Heroldsberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D 1/300 ; A61K 7/00 ;
U.S. Cl.
CPC ...
C09D 1/300 ; A61K 7/00 ;
Abstract
A method for increasing the tensile, breaking and flexural strength of coloured leads. The method is characterized in that 1 to 50 percent by weight alkyl and/or hydroxyalkyl cellulose which are soluble in organic solvents and whose alkyl radicals can be straight-chained or branched are added to the lead substance. The invention also relates to coloured pencils containing said coloured leads.
Bruchert, Werner. (2004). Method for increasing the tensile, breaking and flexural strength of colored leads and colored pencils containing the same (U.S. Patent No. 6830610). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6830610
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile