Strip for whitening tooth surfaces
US6419906B1 · kind B1 · utility
120Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2001 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Mar 12, 2021 |
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.