Binary dental bleaching using switch-closable double barrel syringe
US7530808B2 · kind B2 · utility
31Cited by
11References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/88
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention is a switch-closeable double barrel syringe and methods for bleaching teeth using it. The syringe comprises two separately contained barrels, each containing one component of a dental bleach, and a rotatable tip with orifices to match, when open, orifices in the barrels, and a mixing chamber. The tip rotates between open and closed positions in order to dispense bleaching compositions for use in dental hygene. Various formulations of bleaching compositions may be contained within the barrels, however the invention is ideally suited for those which require separate storage of active ingredients before use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.