US4540723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental restorative composition containing monofunctional monomer and diolefinically unsaturated monomer
Assignee: Johnson and Johnson Dental Products Co
•
Filing: 1984-05-16
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Granted: 1985-09-10
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Expires: 2004-05-16
Abstract
Abstract A dental restorative composition containing a monofunctional aromatic or cycloaliphatic acrylate or methacrylate, such as benzyl methacrylate.
Inventors
- 👤 Lincoln Ying
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:59
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
32 words
A dental restorative composition comprising a polymerizable composition containing at least two olefinically unsaturated groups, a filler, and a minor proportion of a monofunctional monomer consisting essentially of benzyl acrylate or methacrylate.
Claim 2
Dependent Claim
32 words
A dental restorative composition comprising a polymerizable composition containing at least two olefinically unsaturated groups, a filler, and a minor proportion of a monofunctional monomer consisting essentially of benzyl acrylate or methacrylate.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein the monofunctional monomer is benzyl methacrylate.
Claim 4
Dependent Claim
15 words
The dental restorative composition of claim 1 wherein the polymerizable composition is a methacrylic ester.
Claim 5
Dependent Claim
15 words
The dental restorative composition of claim 2 wherein the polymerizable composition is a methacrylic ester.
Claim 6
Dependent Claim
15 words
The dental restorative composition of claim 3 wherein the methacrylic ester comprises ethoxylated bisphenol-A dimethacrylate.
Claim 7
Dependent Claim
15 words
The dental restorative composition of claim 4 wherein the methacrylic ester comprises ethoxylated bisphenol-A dimethacrylate.
References Cited (Backward Citations)
US4433958A
Cited
US4426504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |