US4108979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice preparations comprising aluminum and a compatible abrasive
Assignee: Indiana University Foundation Inc
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Filing: 1976-08-02
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Granted: 1978-08-22
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Expires: 1996-08-02
Abstract
Abstract Improved therapeutic dentifrice preparations comprise a nontoxic and anticariogenically effective amount of one or more water-soluble aluminum salts and a compatible dental abrasive selected from the group consisting of purified, calcined kaolin, calcined aluminum silicate, zirconium silicate, silica, alumina, calcined and uncalcined talcs, barium sulfate, resin abrasives, and mixtures thereof.
Inventors
- 👤 Joseph C. Muhler
- 👤 Mark S. Putt
- 👤 Carl J. Kleber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
69 words
A method for reducing decalcification and solubility of dental enamel and the incidence and severity of dental caries comprising the application to the teeth of a fluoride-free dentifrice preparation comprising a nontoxic and anticariogenically effective amount of at least one water-soluble aluminum salt and a dental abrasive consisting essentially of a member selected from the group consisting of purified, calcined kaolin, calcined aluminum silicate, silica, alumina, and mixtures thereof.
Claim 2
Independent Claim
69 words
A method for reducing decalcification and solubility of dental enamel and the incidence and severity of dental caries comprising the application to the teeth of a fluoride-free dentifrice preparation comprising a nontoxic and anticariogenically effective amount of at least one water-soluble aluminum salt and a dental abrasive consisting essentially of a member selected from the group consisting of purified, calcined kaolin, calcined aluminum silicate, silica, alumina, and mixtures thereof.
Claim 3
Dependent Claim
44 words
A method, as claimed in claim 1, wherein the aluminum salt is provided at a level of about 0.001 - 5.0% by weight calculated as aluminum ions and the dental abrasive is present at a level of about 10-95% by weight of the preparation.
Claim 4
Dependent Claim
15 words
A method, as claimed in claim 1, wherein the aluminum salt is aluminum chloride hexahydrate.
Claim 5
Dependent Claim
16 words
A method, as claimed in claim 1, wherein the aluminum salt is aluminum potassium sulfate dodecahydrate.
Claim 6
Dependent Claim
15 words
A method, as claimed in claim 1, wherein the dental abrasive is purified, calcined kaolin.
Claim 7
Dependent Claim
61 words
A fluoride-free dentifrice preparation having a reduced potential for decalcifying dental enamel and that is effective to reduce the solubility thereof comprising a nontoxic and anticariogenically effective amount of at least one water-soluble aluminum salt and a dental abrasive consisting essentially of a member selected from the group consisting of purified, calcined kaolin, calcined aluminum silicate, silica, alumina, and mixtures thereof.
Claim 8
Dependent Claim
61 words
A fluoride-free dentifrice preparation having a reduced potential for decalcifying dental enamel and that is effective to reduce the solubility thereof comprising a nontoxic and anticariogenically effective amount of at least one water-soluble aluminum salt and a dental abrasive consisting essentially of a member selected from the group consisting of purified, calcined kaolin, calcined aluminum silicate, silica, alumina, and mixtures thereof.
Claim 9
Dependent Claim
45 words
A dentifrice preparation, as claimed in claim 6, wherein the aluminum salt is provided at a level of about 0.001 - 5.0% by weight calculated as aluminum ions and the dental abrasive is present at a level of about 10-95% by weight of the preparation.
Claim 10
Dependent Claim
16 words
A dentifrice preparation, as claimed in claim 6, wherein the aluminum salt is aluminum chloride hexahydrate.
Claim 11
Dependent Claim
17 words
A dentifrice preparation, as claimed in claim 6, wherein the aluminum salt is aluminum potassium sulfate dodecahydrate.
Claim 12
Dependent Claim
16 words
A dentifrice preparation, as claimed in claim 6, wherein the dental abrasive is purified, calcined kaolin.
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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) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |