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:
May. 31, 2016
Filed:
Nov. 14, 2007
Applicants:
Garold E Radke, Lebanon, OR (US);
Alexander Govyadinov, Corvallis, OR (US);
Inventors:
Garold E Radke, Lebanon, OR (US);
Alexander Govyadinov, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/01 (2006.01); C09D 11/322 (2014.01); B41J 11/00 (2006.01); C09D 11/32 (2014.01); B41M 3/14 (2006.01); C09D 11/50 (2014.01);
U.S. Cl.
CPC ...
C09D 11/322 (2013.01); B41J 11/002 (2013.01); B41M 3/144 (2013.01); C09D 11/32 (2013.01); C09D 11/50 (2013.01);
Abstract
An ink can be substantially invisible under most lighting conditions, and only visible when excited by UV energy having a wavelength specific to the colorant. The ink can include a liquid vehicle and a fluorescent colorant. The fluorescent colorant can have an average particle size of less than about 200 nm. Such ink can be configured as an ink-jet ink.