US3943240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothpaste
Assignee: Colgate Palmolive Co
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Filing: 1974-04-30
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Granted: 1976-03-09
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Expires: 1994-04-30
Abstract
Abstract Toothpaste containing sodium bicarbonate as the principal abrasive and a lesser amount of another compatible abrasive. Examples of these are chalk, silica, alumina, zirconium silicate or sodium aluminosilicate, or a mixture thereof, said other abrasive constituting at least about 3 percent of the toothpaste.
Inventors
- 👤 Thomas James Delaney
- 👤 William Grant Pierson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:26
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/18; A61K8/19
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
A dental cream containing an abrasive content comprising at least about 20 percent sodium bicarbonate in a vehicle containing sufficient liquids, said vehicle consisting essentially of about 5 to 35 percent water and sufficient viscous water miscible polyol humectant or mixtures thereof, and a sufficient amount of gelling or thickening agent to impart to the dental cream the pasty consistency, body and non-tacky nature which is characteristic of conventional dental creams or toothpastes, and over 1 percent of a water insoluble dental abrasive material compatible with said bicarbonate in the dental cream, said sodium bicarbonate being primarily in the undissolved solid state, said dental cream having a granular textured appearance comprising a substantially dispersed non-crystalline appearing granulate of macroscopic crystalline bicarbonate granules in an otherwise continuous matrix.
Claim 2
Dependent Claim
127 words
A dental cream containing an abrasive content comprising at least about 20 percent sodium bicarbonate in a vehicle containing sufficient liquids, said vehicle consisting essentially of about 5 to 35 percent water and sufficient viscous water miscible polyol humectant or mixtures thereof, and a sufficient amount of gelling or thickening agent to impart to the dental cream the pasty consistency, body and non-tacky nature which is characteristic of conventional dental creams or toothpastes, and over 1 percent of a water insoluble dental abrasive material compatible with said bicarbonate in the dental cream, said sodium bicarbonate being primarily in the undissolved solid state, said dental cream having a granular textured appearance comprising a substantially dispersed non-crystalline appearing granulate of macroscopic crystalline bicarbonate granules in an otherwise continuous matrix.
Claim 3
Dependent Claim
42 words
A dental cream as in claim 1 wherein said insoluble abrasive is present in amount of at least about 3 percent of the dental cream and is selected from the group consisting of silica, alumina, silicates and carbonates non-reactive with the bicarbonate.
Claim 4
Dependent Claim
26 words
A dental cream as in claim 2 wherein the total abrasive content is about 25 - 60 percent and is dispersed in an aqueous humectant medium.
Claim 5
Dependent Claim
11 words
A dental cream as in claim 3 which contains calcium carbonate.
Claim 6
Dependent Claim
13 words
A dental cream as in claim 3 which contains flat flakes of alpha-alumina.
Claim 7
Dependent Claim
22 words
A dental cream as in claim 1 wherein said water insoluble dental abrasive material is included in amounts of about 3-25 percent.
Claim 8
Dependent Claim
19 words
A dental cream as in claim 1 wherein the sodium bicarbonate - water ratio is about 3:1 to 6:1.
Claim 9
Dependent Claim
14 words
A dental cream as defined in claim 1 further including a non-soap synthetic detergent.
Claim 10
Dependent Claim
20 words
A dental cream as defined in claim 1 further including at least about 0-5 percent of a suitable flavoring oil.
References Cited (Backward Citations)
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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) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |