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:
Mar. 14, 2000
Filed:
Jul. 23, 1998
Brahma Sharma, Louisville, CO (US);
Ad Dent Inc., Danbury, CT (US);
Abstract
A dental bleaching system and method having two separated components adapted to be dispensed from a single dispenser as a mixed viscous dental bleach composition. The first component comprises aqueous hydrogen peroxide and the second component includes a gelling agent, catalyst, a pH alkaline buffer, a redox color indicator adapted to oxidize in the presence of a peroxide from a visible color into a neutralized color and a second dye stable in the presence of a peroxide with the concentration of the redox color indicator selected relative to the second dye such that the redox color will be predominant during the bleaching operation and the second dye will be predominant at the end of a controlled time period corresponding to when the bleaching treatment may be discontinued.