Photopolymerizable dental products
Abstract
Abstract PHOTOPOLYMERIZALE DENTAL PRODUCTS ARE PROVIDED IN THE FORM OF COMPOSITIONS SUITABLE AS CMPOSITS RESTORATIVE MATERIALS, FISSURE SEALANTS, CEMENTS, ATIVITY LINERS AND RESTORAION GLAZES, THE COMPOSITIONS IN SITU, WITHIN THE ORAL ENVIRON PHOTOPOLYMERIZED IN SITU, WITHIN THE ORAL ENVIRONMENT, BY THE APPLICATION OF LIGHT ENERGY, SPECIFICALLY LIGHT ENERGY IN THE NEAL ULTRAVIOLET WAVE LENGTH BAND. SUCH A COMPOSITION IS MADE IN TWO PARTS, I.E. PASTE-PASTE, PASTE-LIQUID JELLY-POWDER, LIQUID-LIQUID ETC., WHEREIN ONE PHASE CONTAINS AN AROMATIC DIMETHACRYLATE MONOMER OR ADDUCT THEREOF WITH A MONO- OR DIISOCYANATE, A DILUENT MONOMER AND A POLYMERIZATION INHIBITOR, WHILE THE OTHER PHASE CONTANS A MATERIAL SENSITIVE TO ULTRAVIOLET LIGHT AND CAPABLE OF INITIATING FREE RADICAL POLYMERIZATION WHEN EXCITED THEREBY. OPTIONALLY, THE PASTE PHASES MAY CONTAIN FILLERS WHICH ARE CHARACTERIZED BY HAVING A REFRACTIVE INDEX NO GREATER THAN 0.075 DIFFERENT FROM THAT OF THE POLYMER RESULTING FROM THE FREE RADICAL POLYMERIZATION.
Inventors
- 👤 D Waller
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |