US4367219A
Expired / Lapsed
US
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Fluoride containing dentifrice
Assignee: Individual
•
Filing: 1981-11-25
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Granted: 1983-01-04
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Expires: 2001-11-25
Abstract
Abstract A water-containing dentifrice having increased fluoride up-take and enhanced anti-caries effect is provided utilizing a combination of strontium edetate, alkali metal ricinoleate and soluble fluoride.
Inventors
- 👤 Murray L. Schole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61K8/40; A61K8/44
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
64 words
A water-containing dentifrice consisting essentially of strontium edetate in an amount of about 1.0 wt. percent to about 25 wt. percent, an alkali metal salt of ricinoleic acid in an amount of about 0.1 wt. percent to about 10 wt. percent and a source of fluoride ion providing a fluoride concentration in the dentifrice from about 0.02 wt. percent to about 2.0 wt. percent.
Claim 2
Dependent Claim
64 words
A water-containing dentifrice consisting essentially of strontium edetate in an amount of about 1.0 wt. percent to about 25 wt. percent, an alkali metal salt of ricinoleic acid in an amount of about 0.1 wt. percent to about 10 wt. percent and a source of fluoride ion providing a fluoride concentration in the dentifrice from about 0.02 wt. percent to about 2.0 wt. percent.
Claim 3
Dependent Claim
13 words
A dentifrice according to claim 1 in which the ricinoleate is sodium ricinoleate.
Claim 4
Dependent Claim
13 words
A dentifrice according to claim 1 or claim 2 further comprising an abrasive.
Claim 5
Dependent Claim
13 words
A dentifrice according to claim 3 in which said abrasive is silica gel.
Claim 6
Dependent Claim
13 words
A dentifrice according to claim 3 in which said abrasive is strontium carbonate.
Claim 7
Dependent Claim
13 words
A dentifrice according to claim 3 in which said abrasive is insoluble metaphosphate.
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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) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |