Toothpaste permitting of controlling the tooth brushing time
US4150106A · kind A · utility
22Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1978 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Apr 12, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/45
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This toothpaste contains reagents for controlling the tooth brushing time by the change in color occurring after a predetermined brushing time. It contains essentially a citrate/citric acid buffer having a molarity of 0.07 to 0.35 M and a pH of 4 to 5.5 in the proportion of 10 to 50%, and chlorophenol red in the proportion of 0.02 to 0.1%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.