US4283385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrices with improved soluble fluoride availability
Assignee: Richardson Vicks Inc
•
Filing: 1980-05-09
•
Granted: 1981-08-11
•
Expires: 2000-05-09
Abstract
Abstract Dentifrice preparations having improved soluble fluoride availability are obtained by incorporation of ethylenediamine tetraacetic acid and sodium salts thereof.
Inventors
- 👤 Dadi J. Dhabhar
- 👤 Nutan B. Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:47
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/19; A61K8/20; A61K8/21; A61Q; A61Q11/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
44 words
A dentifrice comprising from about 0.1 to about 5% by weight of a water-soluble fluoride, from about 5 to about 60% by weight of a calcium abrasive and from about 0.01 to about 5% by weight of ethylenediamine tetraacetic acid or sodium salt thereof.
Claim 2
Dependent Claim
44 words
A dentifrice comprising from about 0.1 to about 5% by weight of a water-soluble fluoride, from about 5 to about 60% by weight of a calcium abrasive and from about 0.01 to about 5% by weight of ethylenediamine tetraacetic acid or sodium salt thereof.
Claim 3
Dependent Claim
26 words
The dentifrice of claim 1 wherein the water soluble fluoride is a monofluorophosphate salt and the abrasive is selected from calcium carbonate or a calcium phosphate.
Claim 4
Dependent Claim
31 words
The dentifrice of claim 2 wherein the water-soluble fluoride is sodium monofluorophosphate, the abrasive is calcium carbonate and the ethylenediamine tetraacetic acid salt is the tetrasodium salt of ethylenediamine tetraacetic acid.
Claim 5
Dependent Claim
41 words
The dentifrice of claim 3 comprising from about 0.05 to about 1% by weight tetrasodium salt of ethylenediamine tetraacetic acid, from about 20 to about 50% by weight calcium carbonate and from about 0.5 to about 1% by weight sodium monofluorophosphate.
Claim 6
Dependent Claim
41 words
The dentifrice of claim 4 comprising from about 0.1 to about 0.5% by weight tetrasodium salt of ethylenediamine tetraacetic acid, from about 25 to about 45% by weight calcium carbonate and from about 0.75 to about 0.85% by weight sodium monofluorophosphate.
Claim 7
Dependent Claim
66 words
The dentifrice of claim 4 comprising a dental cream having the formula: ______________________________________
Ingredient Composition A %w/w
______________________________________
Calcium Carbonate 35.0
Glycerin 12.5
Sorbitol Solution 70%
12.5
Colloidal Silica 1.7
Sodium Monofluorophosphate
0.82
Veegum Regular 0.8
Sodium Carboxymethylcellulose
0.7
Tetrasodium salt of Ethylenediamine
0.3
Tetraacetic Acid
Sodium Saccharin 0.2
Flavoring 1.4
Alcohol USP 190°
0.5
Sodium Lauryl Sulfate
1.5
Methylparaben 0.06
Propylparaben 0.02
Water 32.0
______________________________________
Claim 8
Dependent Claim
65 words
The dentifrice of claim 4 comprising a dental cream having the formula: ______________________________________
Ingredient Composition B %w/w
______________________________________
Calcium Carbonate 30.0
Glycerin 12.25
Sorbitol Solution 70%
9.0
Potassium Nitrate 5.0
Colloidal Silica 1.0
Sodium Monofluorophosphate
0.81
Xanthan Gum 0.38
Sodium Carboxymethylcellulose
0.92
Tetrasodium salt of Ethylenediamine
0.3
Tetraacetic Acid
Sodium Saccharin 0.23
Flavoring 1.35
Sodium Lauryl Sulfate
2.1
Methylparaben 0.06
Propylparaben 0.02
Water 36.58
______________________________________
Claim 9
Dependent Claim
66 words
The dentifrice of claim 4 comprising a dental cream having the formula: ______________________________________
Ingredient Composition C %w/w
______________________________________
Calcium Carbonate 35.0
Glycerin 12.5
Sorbitol Solution 70%
12.5
Colloidal Silica 1.7
Sodium Monofluorophosphate
0.82
Veegum Regular 0.8
Sodium Carboxymethylcellulose
0.7
Tetrasodium salt of Ethylenediamine
0.1
Tetraacetic Acid
Sodium Saccharin 0.2
Flavoring 1.4
Alcohol USP 190°
0.5
Sodium Lauryl Sulfate
1.5
Methylparaben 0.06
Propylparaben 0.02
Water 32.2
______________________________________
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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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |