US4046872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cream
Assignee: Colgate Palmolive Co
•
Filing: 1975-10-02
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Granted: 1977-09-06
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Expires: 1995-10-02
Abstract
Abstract Dental cream comprising between about 35 and 60% by weight of abrasive consisting essentially of calcium carbonate and alumina, with the alumina at least about 0.05% by weight of the dental cream and in an amount not greater than the calcium carbonate. The dental cream also contains a water-soluble monofluorophosphate salt in an amount which provides about 0.01-1% by weight fluoride in said dental cream and about 0.1-1.5% by weight of an alkali metal tripolyphosphate as an agent to improve the ability of the dental cream to retain monofluorophosphate as fluoride. The dental cream may also contain 0.025-0.25% by weight of a dissolved or dispersed silicate.
Inventors
- 👤 Robert Lee Mitchell
- 👤 William John Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:42
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61K2800/00; A61K2800/40; A61K2800/52; A61K2800/526
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
182 words
A process of preparing a dental cream composition containing a monofluorophosphate salt which dental cream retains soluble monofluorophosphate as fluoride which dental cream comprises a dental cream vehicle, a water soluble monofluorophosphate salt, abrasives and alkali metal tripolyphosphate comprising dissolving in said dental cream vehicle containing said monofluorophosphate salt and said abrasives an alkali metal tripolyphosphate whereby there is dispersed or dissolved in said vehicle said alkali metal tripolyphosphate salt as a component which increases retention of soluble monofluorophosphate as fluoride, said monofluorophosphate salt being selected from the group consisting of alkali metal, calcium, magnesium and aluminum monofluorophosphate and present in an amount which provides between about 0.01 and1% by weight of fluoride in said composition, said abrasives being in amount between about 35 and 60% by weight, said abrasive consisting essentially of calcium carbonate and alumina, said alumina being present in an amount of at least about 0.05% by weight up to an amount equal to or less than but not greater than said calcium carbonate, and said alkali metal tripolyphosphate being in amount between about 0.1 and 1.5% by weight.
Claim 2
Dependent Claim
182 words
A process of preparing a dental cream composition containing a monofluorophosphate salt which dental cream retains soluble monofluorophosphate as fluoride which dental cream comprises a dental cream vehicle, a water soluble monofluorophosphate salt, abrasives and alkali metal tripolyphosphate comprising dissolving in said dental cream vehicle containing said monofluorophosphate salt and said abrasives an alkali metal tripolyphosphate whereby there is dispersed or dissolved in said vehicle said alkali metal tripolyphosphate salt as a component which increases retention of soluble monofluorophosphate as fluoride, said monofluorophosphate salt being selected from the group consisting of alkali metal, calcium, magnesium and aluminum monofluorophosphate and present in an amount which provides between about 0.01 and1% by weight of fluoride in said composition, said abrasives being in amount between about 35 and 60% by weight, said abrasive consisting essentially of calcium carbonate and alumina, said alumina being present in an amount of at least about 0.05% by weight up to an amount equal to or less than but not greater than said calcium carbonate, and said alkali metal tripolyphosphate being in amount between about 0.1 and 1.5% by weight.
Claim 3
Dependent Claim
14 words
The process of claim 1 containing at least about 1% by weight of alumina.
Claim 4
Dependent Claim
22 words
The process of claim 1 containing between about 40 and 52% by weight of abrasive; and wherein said alumina is hydrated alumina.
Claim 5
Dependent Claim
14 words
The process of claim 3 contains at least about 1% by weight of alumina.
Claim 6
Dependent Claim
16 words
The process of claim 4 containing between about 0.15 and 1% by weight of sodium tripolyphosphate.
Claim 7
Dependent Claim
14 words
The process of claim 5 containing between about 7 and 13% by weight alumina.
Claim 8
Dependent Claim
12 words
The process of claim 5 containing up to 20% by weight alumina.
Claim 9
Dependent Claim
12 words
The process of claim 5 containing more than 20% by weight alumina.
Claim 10
Dependent Claim
31 words
The process of claim 1 wherein said vehicle contains between about 20 and 25% by weight of a humectant; between about 0.5 and 5% by weight of a gum; and water.
Claim 11
Dependent Claim
34 words
The process of claim 9 wherein said alumina is hydrated alumina; and containing between about 0.15 and 1% by weight of said tripolyphosphate and between about 0.9 and 1.3% by weight of said gum.
Claim 12
Dependent Claim
63 words
The process of claim 10 containing between about 40 and 52% of said abrasive; wherein said tripolyphosphate is sodium tripolyphosphate; wherein said water-soluble monofluorophosphate is sodium monofluorophosphate; wherein said calcium carbonate is chalk which contains up to about 0.5% of its weight of magnesium carbonate; and wherein said dental cream contains between about0.025 and 0.25% by weight of a dissolved or dispersed silicate
Claim 13
Dependent Claim
11 words
The process of claim 11 wherein said silicate is sodium silicate.
Claim 14
Dependent Claim
35 words
The process of claim 12 containing up to 20% by weight of said alumina, between about 0.2 and 0.7% by weight of sodium tripolyphosphate and between about 0.05 and 0.15% by weight of sodium silicate.
Claim 15
Dependent Claim
28 words
The process of claim 12 containing between about 7 and 13% by weight of said alumina and between about 0.05 and 0.1% by weight of said sodium silicate.
Claim 16
Dependent Claim
24 words
The process of claim 11 wherein said humectant contains glycerine and said chalk contains at least about 0.1% of its weight of magnesium carbonate.
Claim 17
Dependent Claim
25 words
The process of claim 12 containing about 1% by weight of said alumina and between about 0.05 and 0.1% by weight of said sodium silicate.
Claim 18
Dependent Claim
24 words
The process of claim 16 wherein said humectant contains glycerine and said chalk contains at least about 0.1% of its weight of magnesium carbonate.
Claim 19
Dependent Claim
37 words
The process of claim 12 containing more than 20% by weight of said alumina, between about 0.2 and 0.7% by weight of said sodium tripolyphosphate, and between about 0.15 and 0.2% by weight of said sodium silicate.
Claim 20
Dependent Claim
24 words
The process of claim 18 wherein said humectant contains glycerine and said chalk contains at least about 0.1% of its weight of magnesium carbonate.
Claim 21
Dependent Claim
167 words
A process of preparing a dental cream composition containing a monofluorophosphate salt which dental cream retains soluble monofluorophosphate as fluoride which dental cream comprises a dental cream vehicle, a water soluble monofluorophosphate salt, abrasives and sodium tripolyphosphate comprising dissolving in said dental cream vehicle containing said monofluorophosphate salt and said abrasives sodium tripolyphosphate whereby there is dispersed or dissolved in said vehicle said sodium tripolyphosphate as a component which increases retention of soluble monofluorophosphate as fluoride, said monofluorophosphate salt being selected from the group consisting of alkali metal, calcium magnesium and aluminum monofluorophosphate and present in an amount which provides between about 0.01 and 1% by weight of fluoride in said composition said abrasives being in amount between about 35 and 60% by weight, said abrasive consisting essentially of at least about 26% by weight of the dental cream composition of calcium carbonate and between about 0.05 and 26% by weight of alumina and said sodium tripolyphosphate being in amount between about 0.1 and 1.5% by weight.
Claim 22
Dependent Claim
167 words
A process of preparing a dental cream composition containing a monofluorophosphate salt which dental cream retains soluble monofluorophosphate as fluoride which dental cream comprises a dental cream vehicle, a water soluble monofluorophosphate salt, abrasives and sodium tripolyphosphate comprising dissolving in said dental cream vehicle containing said monofluorophosphate salt and said abrasives sodium tripolyphosphate whereby there is dispersed or dissolved in said vehicle said sodium tripolyphosphate as a component which increases retention of soluble monofluorophosphate as fluoride, said monofluorophosphate salt being selected from the group consisting of alkali metal, calcium magnesium and aluminum monofluorophosphate and present in an amount which provides between about 0.01 and 1% by weight of fluoride in said composition said abrasives being in amount between about 35 and 60% by weight, said abrasive consisting essentially of at least about 26% by weight of the dental cream composition of calcium carbonate and between about 0.05 and 26% by weight of alumina and said sodium tripolyphosphate being in amount between about 0.1 and 1.5% by weight.
Claim 23
Dependent Claim
13 words
The process of claim 1 wherein said alkali metal tripolyphosphate is sodium tripolyphosphate.
Claim 24
Dependent Claim
24 words
The process of preparing a dental cream composition as claimed in claim 1 wherein said dental cream is packaged in an unlined aluminum tube.
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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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |