US3906090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clear dentifrice
Assignee: Colgate Palmolive Co
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Filing: 1974-09-10
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Granted: 1975-09-16
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Expires: 1994-09-10
Abstract
Abstract Visually clear dentifrice comprising a water-insoluble aluminosilicate sodium salt complex in which silica is interbonded with alumina, which alumina is present in amount up to 3.3% by weight of the polishing agent in which the mole ratio of silica to alumina is at least about 45:1, said 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
2026-10-30 16:52
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: 9
Claim 1
Independent Claim
118 words
A VISUALLY CLEAR DENTIFRICE COMPRISING ABOUT 5-30% BY WEIGHT OF A DENTIALLY 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 ALUMINOSILICATE SALT OF SODIUM IN WHICH SILICA IS INTERBONDED WITH ALUMINA AND WHICH CONTAINS UP TO 3.3% BY WEIGHT OF THE POLISHING AGENT OF ALUMINA, AND IN WHICH THE MOL RATIO OF SILICA TO ALUMINA IS AT LEAST ABOUT 45.1, SAID POLISHING AGENT HAVING A REFRACTIVE INDEX OF ABOUT 1.44-1.47, UP TO ABOUT 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
118 words
A VISUALLY CLEAR DENTIFRICE COMPRISING ABOUT 5-30% BY WEIGHT OF A DENTIALLY 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 ALUMINOSILICATE SALT OF SODIUM IN WHICH SILICA IS INTERBONDED WITH ALUMINA AND WHICH CONTAINS UP TO 3.3% BY WEIGHT OF THE POLISHING AGENT OF ALUMINA, AND IN WHICH THE MOL RATIO OF SILICA TO ALUMINA IS AT LEAST ABOUT 45.1, SAID POLISHING AGENT HAVING A REFRACTIVE INDEX OF ABOUT 1.44-1.47, UP TO ABOUT 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
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 4
Dependent Claim
14 words
The visually clear dentifrice claimed in claim 1 wherein said dentifrice contains sodium monofluorophosphate.
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
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 8
Dependent Claim
35 words
The visually clear dentifrice claimed in claim 6 wherein the alumina content of said polishing agent is from about 0.1% to 3.3% by weight and the silica content is at least about 70% by weight.
Claim 9
Dependent Claim
20 words
The visually clear dentifrice claimed in claim 7 wherein said sodium aluminosilicate contains loosely and randomly distributed amorphous precipitated particles.
References Cited (Backward Citations)
US3728446A
Cited
US3711604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |