Light hardening device and method for hardening a polymerizable mass for dental applications
USRE44046E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2008 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jul 11, 2028 |
Classification
- Technology area (CPC —)General
Abstract
A light hardening device is provided for hardening a light hardenable mass applied for dental purposes that has a first light emitting diode for emitting light at a range of intensities corresponding to a set of wavelengths which at most only partially overlap a range of light sensitivities of a photo initiator comprised in the mass. The light hardening device also includes a second light emitting diode for emitting light at a range of intensities corresponding to a set of wavelengths which overlap the set of photo initiator light sensitivities to a relatively greater extent than the partial overlap of the range of first light emitting diode intensities with the range of photo initiator light sensitivities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.