Patent US3941877A successfully refreshed from Google Patents.
US3941877A
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Dentifrice composition
Assignee: Colgate Palmolive Co
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Filing: 1974-05-20
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Granted: 1976-03-02
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Expires: 1994-05-20
Abstract
Abstract Dentifrice composition containing a monofluorophosphate and polishing agent containing calcium carbonate and insoluble alkali metal metaphosphate, alumina or mixture therof. The ratio of calcium carbonate to insoluble alkali metal metaphosphate and to alumina is about 3:1 to about 1000:1. This dentifrice retains a desirable level of soluble fluoride upon aging and when insoluble alkali metal metaphosphate is present, does not cause substantial corrosion of unlined aluminum containers.
Inventors
- 👤 William James King
- 👤 Leo Thomas Murray
- 👤 Gerhard Martin Salzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:20
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/52; A61K2800/526
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
72 words
A dental cream composition comprising a water-soluble monofluorophosphate in amount which provides about 0.01-1% by weight fluorine to the dentifrice and about 20-75% by weight of a water-insoluble compatible polishing material consisting essentially of a mixture of calcium carbonate with insoluble alkali metal metaphosphate, the ratio of said calcium carbonate to said insoluble alkali metal metaphosphate being about 3:1 to about 1000:1;--said dentifrice having an initial pH of about 7 to 9.5.
Claim 2
Dependent Claim
72 words
A dental cream composition comprising a water-soluble monofluorophosphate in amount which provides about 0.01-1% by weight fluorine to the dentifrice and about 20-75% by weight of a water-insoluble compatible polishing material consisting essentially of a mixture of calcium carbonate with insoluble alkali metal metaphosphate, the ratio of said calcium carbonate to said insoluble alkali metal metaphosphate being about 3:1 to about 1000:1;--said dentifrice having an initial pH of about 7 to 9.5.
Claim 3
Dependent Claim
15 words
The dental cream composition claimed in claim 1 wherein said water-soluble monofluorophosphate is sodium monofluorophosphate.
Claim 4
Dependent Claim
21 words
The dental cream composition claimed in claim 2 wherein said monofluorophosphate is present in an amount of about 0.76% by weight.
Claim 5
Dependent Claim
18 words
The dental cream composition claimed in claim 2 wherein said insoluble alkali metal metaphosphate is insoluble sodium metaphosphate.
Claim 6
Dependent Claim
26 words
The dental cream composition claimed in claim 4 wherein the ratio of said calcium carbonate to said insoluble sodium metaphosphate is about 6:1 to about 1000:1.
Claim 7
Dependent Claim
23 words
The dental cream composition claimed in claim 4 wherein the ratio of said calcium carbonate to said insoluble sodium metaphosphate is about 46.25:1.
References Cited (Backward Citations)
US3227617A
Cited
US3060098A
Cited
US3119743A
Cited
GB1076851A
Cited
US3227618A
Cited
US3634585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |