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Patent US4243578A successfully refreshed from Google Patents.
US4243578A
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Dental filling composition
Assignee: Henkel Loctite Corp
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Filing: 1980-01-17
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Granted: 1981-01-06
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Expires: 2000-01-17
Abstract
Abstract An improved dental filling material is prepared from polymerizable urethane-acrylate resins which cure by a free-radical mechanism to form hard and durable filling compositions which bond strongly and adhesively to tooth enamel, to dentin, to dental prostheses and to preexisting dental filling materials.
Inventors
- 👤 Denis J. O'Sullivan
- 👤 Bernard J. Bolger
- 👤 T. Eisirt Casey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:48
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/891; A61K6/893; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/672; Y; Y10; Y10S; Y10S525/00; Y10S525/92; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A dental filling composition which comprises: a mixture of (1) polymerizable acrylate ester monomers, the structure of one of which conforms to (a) the formula ##STR4## and the other structure which conforms to (b) the formula ##STR5## wherein PR represents a propylene triol oligomer residue; (2) about 0.1 to about 7 percent by weight of a free radical polymerization initiator, based upon the weight of the mixture of the two monomers; and (3) about 40 to 95 percent by weight glass powder filler, based upon the weight of the composition.
Claim 2
Dependent Claim
90 words
A dental filling composition which comprises: a mixture of (1) polymerizable acrylate ester monomers, the structure of one of which conforms to (a) the formula ##STR4## and the other structure which conforms to (b) the formula ##STR5## wherein PR represents a propylene triol oligomer residue; (2) about 0.1 to about 7 percent by weight of a free radical polymerization initiator, based upon the weight of the mixture of the two monomers; and (3) about 40 to 95 percent by weight glass powder filler, based upon the weight of the composition.
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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |