US 12,133,905 B2
Multi-phase oral composition for tooth whitening
Jayanth Rajaiah, Loveland, OH (US); Paul Albert Sagel, Mainville, OH (US); and Franco Silva Medeiros, Loveland, OH (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Oct. 18, 2021, as Appl. No. 17/503,553.
Application 17/503,553 is a continuation of application No. 15/790,788, filed on Oct. 23, 2017, granted, now 11,147,753.
Claims priority of provisional application 62/413,200, filed on Oct. 26, 2016.
Claims priority of provisional application 62/413,205, filed on Oct. 26, 2016.
Claims priority of provisional application 62/413,214, filed on Oct. 26, 2016.
Claims priority of provisional application 62/413,222, filed on Oct. 26, 2016.
Claims priority of provisional application 62/413,229, filed on Oct. 26, 2016.
Claims priority of provisional application 62/413,237, filed on Oct. 26, 2016.
Claims priority of provisional application 62/413,189, filed on Oct. 26, 2016.
Prior Publication US 2023/0172818 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/06 (2006.01); A61C 19/06 (2006.01); A61K 8/02 (2006.01); A61K 8/22 (2006.01); A61K 8/31 (2006.01); A61K 8/34 (2006.01); A61K 8/81 (2006.01); A61K 8/86 (2006.01); A61K 8/92 (2006.01); A61N 5/06 (2006.01); A61Q 11/00 (2006.01); A61Q 11/02 (2006.01)
CPC A61K 8/064 (2013.01) [A61C 19/066 (2013.01); A61K 8/0216 (2013.01); A61K 8/062 (2013.01); A61K 8/22 (2013.01); A61K 8/31 (2013.01); A61K 8/345 (2013.01); A61K 8/8111 (2013.01); A61K 8/86 (2013.01); A61K 8/92 (2013.01); A61N 5/0603 (2013.01); A61N 5/062 (2013.01); A61Q 11/00 (2013.01); A61Q 11/02 (2013.01); A61K 2800/42 (2013.01); A61K 2800/81 (2013.01); A61K 2800/87 (2013.01); A61K 2800/884 (2013.01); A61K 2800/92 (2013.01); A61N 2005/0606 (2013.01); A61N 2005/0663 (2013.01)] 18 Claims
 
1. A multi-phase oral composition comprising:
a) from about 0.002% to about 50%, by weight of the multi-phase oral composition, of an aqueous phase having a bleaching agent; and
b) a semi-solid hydrophobic phase, wherein the semi-solid hydrophobic phase comprises petrolatum or microcrystalline wax, and wherein the multi-phase oral composition comprises at least about 50%, by weight of the multi-phase oral composition, of the petrolatum or the microcrystalline wax;
wherein a ratio of the concentration in weight percent of bleaching agent present in the aqueous phase to a concentration in weight percent of bleaching agent present in the multi-phase oral composition is at least about 5;
wherein a concentration of the bleaching agent is up to about 20%, by weight of the multi-phase oral composition; and
wherein the multi-phase oral composition is a water-in-oil emulsion having droplets of the aqueous phase dispersed within the semi-solid hydrophobic phase.