Strip for whitening tooth surfaces
US6503486B2 · kind B2 · utility
87Cited by
15References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/31
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A thin, flexible film which when applied to stained teeth is hydrated by saliva and is effective in such form to whiten teeth, the film comprising an anhydrous water hydratable ethylene oxide polymer matrix containing a solid peroxide whitening agent whereby upon application to stained tooth surfaces, the peroxide whitening agent is solublilized by saliva present in the oral cavity into active whitening activity when the film is positioned and placed on the teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.