US3978206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental compositions and appliances containing anti-carious ion exchange resins
Assignee: Bayer AG
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Filing: 1971-08-09
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Granted: 1976-08-31
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Expires: 1991-08-09
Abstract
Abstract Tooth pastes, tooth filling and repair materials, tooth lacquers, dental prostheses and other products and appliances coming into contact with live teeth and tooth surfaces are rendered anti-carious by incorporating therein ion exchange resins containing fluorine, phosphate or calcium ions.
Inventors
- 👤 Gunther Naumann
- 👤 Gustav Pieper
- 👤 Hans-Joachim Rehberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:56
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8105; A61K8/8117; A61K6/00; A61K6/80; A61K6/884; A61K8/19; A61K8/20; A61K8/21; A61K8/24; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
38 words
In a dental composition a minor amount effective to inhibit caries of an ion exchange resin containing, as part of the exchangeable ions thereof, an anti-carious agent selected from the group consisting of fluoride, phosphate and calcium ions.
Claim 2
Dependent Claim
38 words
In a dental composition a minor amount effective to inhibit caries of an ion exchange resin containing, as part of the exchangeable ions thereof, an anti-carious agent selected from the group consisting of fluoride, phosphate and calcium ions.
Claim 3
Dependent Claim
21 words
A composition according to claim 1 in which the ion exchange resin has a particle size of less than 100 microns.
Claim 4
Dependent Claim
27 words
A composition according to claim 1 in which the ion exchange resin is present in the formulation in the amount of approximately 5 to 10% by weight.
Claim 5
Dependent Claim
30 words
A composition according to claim 1 in which the anti-carious agent is fluoride ion in the amount of about 6.1%, calculated on a dry basis of the ion exchange resin.
Claim 6
Dependent Claim
29 words
A composition according to claim 1 in which the anti-carious agent is phosphate ion in the amount of 7.3%, calculated on a dry basis of the ion exchange resin.
Claim 7
Dependent Claim
31 words
A composition according to claim 1 in which the anti-carious agent is calcium ion in the amount of about 8.8% Ca, calculated on a dry basis of the ion exchange resin.
Claim 8
Dependent Claim
41 words
In a tooth filling and repair material, a minor amount effective to inhibit caries of an ion exchange resin containing, as part of the exchangeable ions thereof, an anti-carious agent selected from the group consisting of fluoride, phosphate and calcium ions.
Claim 9
Dependent Claim
41 words
In a tooth filling and repair material, a minor amount effective to inhibit caries of an ion exchange resin containing, as part of the exchangeable ions thereof, an anti-carious agent selected from the group consisting of fluoride, phosphate and calcium ions.
References Cited (Backward Citations)
US3425790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |