Patent US3728446A successfully refreshed from Google Patents.
US3728446A
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Speckled dentifrice gel
Assignee: Colgate Palmolive Co
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Filing: 1971-01-11
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Granted: 1973-04-17
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Expires: 1991-01-11
Abstract
Abstract Oral composition containing aqueous liquid and alkali metal carboxymethyl cellulose gelling agent and including non-toxic impalpable colored particles of insoluble salt of the gelling agent. The composition is formed by coloring a soluble polyvalent metal salt, such as aluminum sulfate, or soluble polyvalent metal hydroxide such as calcium hydroxide which forms a water-insoluble salt with the gelling agent, such as aluminum or calcium carboxymethyl cellulose. The dyed salt or hydroxide is then incorporated into the oral composition thereby forming non-toxic impalpable particles of the insoluble salt of the metal with the gelling agent. The speckled dentifrice may also be formed by first incorporating the metal salt or hydroxide into a dyed dentifrice gel thus permitting dye from the gel to become adsorbed into the thereby formed particles, or by incorporating the metal salt or hydroxide into an uncolored gel thereby forming particles which are themselves colored or are then dyed.
Inventors
- 👤 F Roberts
- 👤 J Norfleet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:38
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/0245; A61K8/04; A61K8/042; A61K8/18; A61K8/72; A61K8/73; A61K8/731; A61K2800/00; A61K2800/40; A61K2800/42
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
36 words
The dentifrice gel composition claimed in claim 1 wherein said gel comprises 0 to about 80 percent by weight of glycerine, about 20-80 percent by weight of sorbitol and about 20-80 percent by weight of water.
Claim 2
Dependent Claim
27 words
The dentifrice gel composition claimed in claim 1 wherein said gel comprises about 15-35 percent by weight of glycerine and about 10-30 percent by weight of water.
Claim 3
Dependent Claim
39 words
The dentifrice gel composition claimed in claim 1 wherein said gelling agent is present in amount of about 0.25-10 percent and said alkali metal carboxymethyl cellulose gelling agent is present in amount of at least 0.25 percent by weight.
Claim 4
Dependent Claim
14 words
The dentifrice gel composition claimed in claim 1 wherein said polyvalent metal is aluminum.
Claim 5
Dependent Claim
19 words
The dentifrice gel composition claimed in claim 5 wherein said particles are oval and are about 0.1-1.5mm in size.
Claim 6
Dependent Claim
57 words
A dentifrice gel composition wherein the gel comprises an aqueous liquid, alkali metal carboxymethyl cellulose and gelling agent having incorporated therein impalpable, non-toxic, colored particles of the water insoluble salt of carboxymethyl cellulose and a polyvalent metal selected from the group consisting of a member of Periodic Group VIII having an atomic number of 26 and 28.
Claim 7
Dependent Claim
58 words
A dentifrice gel composition wherein the gel comprises an aqueous liquid, alkali metal carboxymethyl cellulose and gelling agent having incorporated therein impalpable, non-toxic, colored particles of the water insoluble salt of carboxymethyl cellulose and a polyvalent metal selected from the group consisting of a member of periodic Group II B having an atomic number of 30 and 48.
Claim 8
Dependent Claim
56 words
A dentifrice gel composition wherein the gel comprises an aqueous liquid, alkali metal carboxymethyl cellulose and gelling agent having incorporated therein impalpable, non-toxic, colored particles of the water insoluble salt of carboxymethyl cellulose and a polyvalent metal selected from the group consisting of a member of periodic Group IV A having an atomic number of 32-82.
Claim 9
Dependent Claim
71 words
A process for producing a dentifrice gel composition comprising incorporating a water-soluble salt or hydroxide of a salt of a polyvalent metal selected from the group consisting of a member of periodic Group II A having an atomic number of 12-56 into a gel comprising an aqueous liquid and dyed alkali metal carboxymethyl cellulose thereby forming impalpable, non-toxic, colored particles of the water-insoluble salt of carboxymethyl cellulose and said polyvalent metal.
Claim 10
Dependent Claim
72 words
A process for producing a dentifrice gel composition comprising incorporating a dyed water-soluble salt or hydroxide of a salt of a polyvalent metal selected from the group consisting of a member of periodic Group II A having an atomic number of 12-56 into a gel comprising an aqueous liquid and alkali metal carboxymethyl cellulose thereby forming impalpable, non-toxic, colored particles of the water insoluble salt of carboxymethyl cellulose and said polyvalent metal.
References Cited (Backward Citations)
US3538230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |