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:
Nov. 07, 2017
Filed:
Jun. 30, 2015
Applicant:
Sanford, L.p., Downers Grove, IL (US);
Inventors:
Jiandong Zhu, Aurora, IL (US);
Wing Sum Vincent Kwan, Chicago, IL (US);
Assignee:
SANFORD, L.P., Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K 5/00 (2006.01); B43K 7/03 (2006.01); B43K 8/02 (2006.01); C09D 11/16 (2014.01); C09D 11/18 (2006.01); C09D 107/00 (2006.01);
U.S. Cl.
CPC ...
C09D 11/16 (2013.01); B43K 5/00 (2013.01); B43K 7/03 (2013.01); B43K 8/02 (2013.01); C09D 11/18 (2013.01); C09D 107/00 (2013.01);
Abstract
The disclosure provides transitorially erasable ink compositions, including an aliphatic hydrocarbon solvent, a rubber dissolved in the aliphatic hydrocarbon solvent, a hydrophilic pigment, and a surfactant. The disclosure further provides methods of preparing transitorially erasable ink compositions and writing instruments comprising transitorially erasable ink compositions. The disclosed erasable ink compositions write well, have strong color and erase easily transitorially, and demonstrate color stability.