US4036949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clear dentifrice
Assignee: Colgate Palmolive Co
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Filing: 1975-09-08
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Granted: 1977-07-19
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Expires: 1995-09-08
Abstract
Abstract Visually clear dentifrice comprising a water-insoluble aluminosilicate sodium salt complex in which the proportion of alumina is up to 3.3% by weight and in which the mole ratio of silica to alumina is at least about 45:1, as a polishing agent having a refractive index of about 1.44-1.47 and a gel vehicle for said polishing agent having about the same refractive index as said polishing agent, said polishing agent being substantially invisible in said gel vehicle.
Inventors
- 👤 Daniel Colodney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:15
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/19; A61K8/26; A61K8/72; A61K8/73; A61K8/731; A61K2800/00; A61K2800/20; A61K2800/26; A61K2800/262
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A visually clear dentifrice comprising about 5-30% by weight of a dentally acceptable substantially water-insoluble particulate polishing agent in a gel vehicle having substantially the same refractive index as said polishing agent, said polishing agent being a synthetic amorphous complex alumino-silicate salt of sodium which contains about 0.1 to 3.3% by weight of the polishing agent of alumina, and in which the mole ratio of silica to alumina is about 45:1 to 1500:1 said polishing agent having a refractive index of about 1.44-1.47, about 5 to 20% by weight of moisture and up to about 10% by weight sodium oxide and said polishing agent being substantially invisible in said gel vehicle.
Claim 2
Dependent Claim
111 words
A visually clear dentifrice comprising about 5-30% by weight of a dentally acceptable substantially water-insoluble particulate polishing agent in a gel vehicle having substantially the same refractive index as said polishing agent, said polishing agent being a synthetic amorphous complex alumino-silicate salt of sodium which contains about 0.1 to 3.3% by weight of the polishing agent of alumina, and in which the mole ratio of silica to alumina is about 45:1 to 1500:1 said polishing agent having a refractive index of about 1.44-1.47, about 5 to 20% by weight of moisture and up to about 10% by weight sodium oxide and said polishing agent being substantially invisible in said gel vehicle.
Claim 3
Dependent Claim
21 words
The visually clear dentifrice claimed in claim 1 wherein said polishing agent is present in amount of about 10-30% by weight.
Claim 4
Dependent Claim
19 words
The visually clear dentifrice claimed in claim 2 wherein the silica content is at least about 70% by weight.
Claim 5
Dependent Claim
50 words
The visually clear dentifrice claimed in claim 1 wherein said dentifrice contains about 25-80% by weight of glycerine and about 30-50% by weight of sorbitol as the liquid portion of said gel vehicle and about 1-5% by weight of a gelling agent as the solid portion of said gel vehicle.
Claim 6
Dependent Claim
16 words
The visually clear dentifrice claimed in claim 4 wherein said gelling agent is sodium carboxymethyl cellulose.
Claim 7
Dependent Claim
24 words
The visually clear dentifrice claimed in claim 1 wherein said dentifrice includes about 0.5-20% by weight of a synthetic finely divided silica thickening agent.
Claim 8
Dependent Claim
14 words
The visually clear dentifrice claimed in claim 1 wherein said dentifrice contains sodium monofluorophosphate.
Claim 9
Dependent Claim
17 words
A dentifrice according to claim 1 wherein the alumino-silicate salt has a refractive index of about 1.45-1.46.
Claim 10
Dependent Claim
23 words
A dentifrice as in claim 7 in which said alumino-silicate salt has a particle size in the range of 1 to 20 microns.
Claim 11
Dependent Claim
26 words
A dentifrice as in claim 3 in which said sodium alumino silicate has an oil absorption value of up to about 130 g. per 100 g.
Claim 12
Dependent Claim
25 words
The visually clear dentifrice claimed in claim 1 wherein the amount of sodium oxide in said alumino-silicate salt is about 0.3 to 2% by weight.
References Cited (Backward Citations)
US3711604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |