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:
Sep. 07, 2010
Filed:
Aug. 05, 2008
Kai Kong Iu, San Diego, CA (US);
Gary Larson, San Diego, CA (US);
Hai Q Tran, San Diego, CA (US);
William a Houle, Encinitas, CA (US);
Kai Kong Iu, San Diego, CA (US);
Gary Larson, San Diego, CA (US);
Hai Q Tran, San Diego, CA (US);
William A Houle, Encinitas, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A brightening system includes a substrate and an amphoteric stilbene composition established on the substrate. The amphoteric stilbene composition includes a predetermined amount of at least one of 4,4'-diamino-2,2′-stilbene disulfonic acid, biarylsulfonate-4,4′-diamino-2,2′-stilbene disulfonic acid, biaryldisulfonate-4,4′-diamino-2,2′-stilbene disulfonic acid, derivatives thereof, salts thereof, and mixtures thereof; and a fixing agent.