Patent US3860918A successfully refreshed from Google Patents.
US4159280A
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US
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Therapeutic dentifrices in unlined container and methods
Assignee: JM Huber Corp
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Filing: 1977-08-24
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Granted: 1979-06-26
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Expires: 1997-08-24
Abstract
Abstract The corrosion and staining of unlined aluminum tube surfaces by dentifrices such as toothpastes, particularly when the dentifrices contain therapeutic agents, is substantially prevented by incorporation into the dentifrice of a controlled amount of an alkaline earth metal ion such as calcium ion, in the range of 0.005-0.2 weight percent, and preferably in the range of 0.005-0.070 weight percent of the dentifrice. The alkaline earth metal may be provided from any water soluble alkaline earth metal salt or as a reaction product of the alkaline earth metal salt with an amorphous silica abrasive and/or thickener.
Inventors
- 👤 Satish K. Wason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:30
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/25; C; C09; C09C; C09C1/00; C09C1/28; C09C1/30; A61K2800/00; A61K2800/40; A61K2800/52; A61K2800/526; C01; C01P; C01P2002/00; C01P2002/02; C01P2004/00; C01P2004/50; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/19; C01P2006/80
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
93 words
An article of manufacture comprising an unlined aluminum tube which is normally subject to corrosion and staining by prolonged contact with a toothpaste composition contacting a fluoride therapeutic agent, said unlined aluminum tube containing a toothpaste composition comprising a fluoride therapeutic agent, a solid phase, a liquid phase, and a fluoride corrosion and staining preventing amount of an alkaline earth metal, said amount being about 0.005 to 0.20 weight percent, and said alkaline earth metal being provided as the reaction product of a water soluble alkaline earth metal salt with an amorphous silica.
Claim 2
Dependent Claim
93 words
An article of manufacture comprising an unlined aluminum tube which is normally subject to corrosion and staining by prolonged contact with a toothpaste composition contacting a fluoride therapeutic agent, said unlined aluminum tube containing a toothpaste composition comprising a fluoride therapeutic agent, a solid phase, a liquid phase, and a fluoride corrosion and staining preventing amount of an alkaline earth metal, said amount being about 0.005 to 0.20 weight percent, and said alkaline earth metal being provided as the reaction product of a water soluble alkaline earth metal salt with an amorphous silica.
Claim 3
Dependent Claim
28 words
The article of manufacture of claim 1, wherein the fluoride therapeutic agent is selected from the group consisting of monofluorosodium phosphate, sodium fluoride, stannous fluoride, and mixtures thereof.
Claim 4
Dependent Claim
25 words
The article of manufacture of claim 1, wherein said alkaline earth metal is selected from the group consisting of calcium, magnesium, strontium, and mixtures thereof.
Claim 5
Dependent Claim
22 words
The article of manufacture of claim 1, wherein said amount of the alkaline earth metal is about 0.005 to 0.070 weight percent.
Claim 6
Dependent Claim
28 words
The article of manufacture of claim 1, wherein said amorphous silica is selected from the group consisting of amorphous precipitated silica, sodium aluminosilicates, silica xero-gels, and mixtures thereof.
Claim 7
Dependent Claim
39 words
The article of manufacture of claim 1, wherein said amorphous silica is an amorphous precipitated silica having the following properties: Oil Absorption-Rub-Out Method (cc/100 g)=80-120 Bet surface Area (m 2 /g)=75-325 Msa average Aggregate Size (microns)=1-10 Bulk Density (lbs./cu.ft.)=10-30
Claim 8
Dependent Claim
14 words
The article of manufacture of claim 1, wherein the alkaline earth metal is calcium.
Claim 9
Dependent Claim
37 words
The article of manufacture of claim 7, wherein said calcium is provided by a water soluble calcium salt selected from the group consisting of calcium nitrate, calcium oxide, calcium hydroxide, calcium fluoride, calcium acetate and calcium formate.
Claim 10
Dependent Claim
27 words
The article of manufacture of claim 8, wherein said calcium salt is selected from the group consisting of calcium nitrate, calcium oxide, calcium hydroxide and calcium fluoride.
Claim 11
Independent Claim
98 words
A method for preventing the corrosion and staining of an unlined aluminum tube which is normally subject to corrosion and staining by prolonged contact with a toothpaste composition containing a fluoride therapeutic agent, said method comprising incorporating into said toothpaste composition a fluoride corrosion and staining preventing amount of an alkaline earth metal, said amount being about 0.005 to 0.20 weight percent, and said alkaline earth metal being provided as the reaction product of an alkaline earth metal salt with an amorphous silica; said toothpaste composition comprising the fluoride therapeutic agent, a liquid phase and a solid phase.
Claim 12
Independent Claim
98 words
A method for preventing the corrosion and staining of an unlined aluminum tube which is normally subject to corrosion and staining by prolonged contact with a toothpaste composition containing a fluoride therapeutic agent, said method comprising incorporating into said toothpaste composition a fluoride corrosion and staining preventing amount of an alkaline earth metal, said amount being about 0.005 to 0.20 weight percent, and said alkaline earth metal being provided as the reaction product of an alkaline earth metal salt with an amorphous silica; said toothpaste composition comprising the fluoride therapeutic agent, a liquid phase and a solid phase.
Claim 13
Dependent Claim
26 words
The method of claim 10, wherein the fluoride therapeutic agent is selected from the group consisting of monofluorosodium phosphate, sodium fluoride, stannous fluoride, and mixtures thereof.
Claim 14
Dependent Claim
23 words
The method of claim 10, wherein said alkaline earth metal is selected from the group consisting of calcium, magnesium, strontium, and mixtures thereof.
Claim 15
Dependent Claim
20 words
The method of claim 10, wherein said amount of the alkaline earth metal is about 0.005 to 0.070 weight percent.
Claim 16
Dependent Claim
26 words
The method of claim 10, wherein said amorphous silica is selected from the group consisting of amorphous precipitated silica, sodium aluminosilicates, silica xerogels, and mixtures thereof.
Claim 17
Dependent Claim
37 words
The method of claim 10, wherein said amorphous silica is an amorphous precipitated silica having the following properties: Oil Absorption-Rub-Out Method (cc/100 g)=80-120 Bet surface Area (m 2 /g)=75-325 Msa average Aggregate Size (microns)=1-10 Bulk Density lbs./cu.ft.)=10-30
Claim 18
Dependent Claim
12 words
The method of claim 10, wherein the alkaline earth metal is calcium.
Claim 19
Dependent Claim
35 words
The method of claim 16, wherein said calcium is provided by a water soluble calcium salt selected from the group consisting of calcium nitrate, calcium oxide, calcium hydroxide, calcium fluoride, calcium acetate and calcium formate.
Claim 20
Dependent Claim
25 words
The method of claim 17, wherein said calcium salt is selected from the group consisting of calcium nitrate, calcium oxide, calcium hydroxide and calcium fluoride.
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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) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |