US4261879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tinted pit and fissure sealant
Assignee: Dentsply Research and Development Corp
•
Filing: 1979-10-11
•
Granted: 1981-04-14
•
Expires: 1999-10-11
Abstract
Abstract A composition is disclosed that is useful for sealing pits and fissures in teeth to prevent the formation of decay therein. The composition contains at least one colorant selected from the group consisting of a plant extract from Annatto or Turmeric, or beta -Apo-8'-Carotenal.
Inventors
- 👤 Russell N. Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:36
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/60; A61K6/65; A61K6/66
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A dental pit and fissure sealant composition comprising a polymerizable resin system containing acrylic monomer, and a small amount, sufficient to impart visible color to said sealent composition, of a colorant selected from the group consisting of Annatto extract, Turmeric extract, and β-Apo-8'-carotenal.
Claim 2
Dependent Claim
43 words
A dental pit and fissure sealant composition comprising a polymerizable resin system containing acrylic monomer, and a small amount, sufficient to impart visible color to said sealent composition, of a colorant selected from the group consisting of Annatto extract, Turmeric extract, and β-Apo-8'-carotenal.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the colorant is Annatto extract.
Claim 4
Dependent Claim
30 words
The composition of claims 1 or 2 wherein the colorant is employed in an amount of from about 0.01 to about 0.4 weight percent, based on weight of acrylic monomer.
Claim 5
Dependent Claim
16 words
The composition of claims 1 or 2 wherein the polymerizable resin system includes bisphenol-A diglycidyl dimethacrylate.
Claim 6
Dependent Claim
17 words
The composition of claim 4 wherein the polymerizable resin system includes a polyalkylene glycol dimethacrylate viscosity reducer.
Claim 7
Dependent Claim
14 words
The composition of claim 5 wherein the polyalkylene glycol dimethacrylate is triethylene glycol dimethacrylate,
Claim 8
Dependent Claim
13 words
The composition of claim 6 wherein the polymerizable resin system contains bisphenol-A dimethacrylate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |