Patent US4428928A successfully refreshed from Google Patents.
US4428928A
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Dentifrice preparations comprising calcined kaolin abrasives
Assignee: Indiana University Research and Technology Corp
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Filing: 1982-06-28
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Granted: 1984-01-31
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Expires: 2002-06-28
Abstract
Abstract Incorporation of talc in dentifrice preparations based on calcined kaolins enhances the rheological properties of such dentifrices. In addition, new and more effective dentifrice preparations may be obtained by employing therein a cleaning and polishing constituent comprising a mixture of calcined kaolin, talc and titanium dioxide. Additionally, anticariogenic adjuvants, such as sodium fluoride and stannous fluoride, especially a 1:2 molar mixture thereof, may be incorporated in such dentifrice preparations.
Inventors
- 👤 Joseph C. Muhler
- 👤 Mark S. Putt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:00
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
In a method for reducing the incidence of dental abrasion caused by regular application to the teeth of a dentifrice preparation comprising as a cleaning and polishing agent calcined kaolin, the improvement consisting of employing therewith at least about 6% talc by weight of the mixture as a modifier.
Claim 2
Dependent Claim
49 words
In a method for reducing the incidence of dental abrasion caused by regular application to the teeth of a dentifrice preparation comprising as a cleaning and polishing agent calcined kaolin, the improvement consisting of employing therewith at least about 6% talc by weight of the mixture as a modifier.
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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |