Abrasive tooth whitening dentifrice of improved stability
US5256402A · kind A · utility
149Cited by
32References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1991 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Sep 13, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/24
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Abrasive dentifrice compositions containing an oxygen liberating whitening compound which is stable with respect to oxygen level and exhibits heightened and rapid whitening of teeth and stain removal which comprises a combination of a dicalcium phosphate compound and a metal ion free peroxide compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.