Compositions useful for tooth whitening
US8945519B2 · kind B2 · utility
10Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2013 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Feb 5, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q11/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides tooth whitening compositions in the form of a liquid crystal or a microemulsion that includes a tooth whitening agent in an amount effective to whiten teeth, a hydrophilic phase including water, a hydrophobic phase including at least one oil, at least one anionic, nonionic, amphoteric or zwitterionic surfactant, and a water soluble co-solvent having a Hildebrand solubility parameter above 12 (cal/cm3)1/2, as well as methods for whitening teeth including applying the liquid crystal or microemulsion composition to the teeth for a period of time and under conditions effective to whiten the teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.