Toothpaste composition
US5560517A · kind A · utility
1Cited by
17References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1994 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Jun 20, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/88
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Packaged toothpaste formulations which contain air sensitive components, e.g. vitamin C, are prevented from discoloring or otherwise degrading, by placing adjacent to an area of the packaging which may allow air access to the formulation, e.g. an air permeable collar, a nozzle, or the wall of an air permeable tube, a body (e.g. plug or layer) of material which does not contain any air sensitive components. Preferably, the latter body of material is the packaged toothpaste but without the air sensitive components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.