US4235874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice
Assignee: Colgate Palmolive Co
•
Filing: 1979-06-11
•
Granted: 1980-11-25
•
Expires: 1999-06-11
Abstract
Abstract A new and improved dentifrice including a mixture of polishing agents, the combination providing improved polishing without significant increase in abrasion.
Inventors
- 👤 James Norfleet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:12
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
91 words
A dentifrice composition having improved polishing power comprising (1) about 19 to 85% of a water-insoluble primary polishing agent selected from the group consisting of insoluble sodium metaphosphate, insoluble potassium metaphosphate, dental grade calcium pyrophosphate, magnesium orthophosphate, tricalcium orthophosphate, dicalcium phosphate dihydrate, anhydrous dicalcium phosphate, calcium carbonate, magnesium carbonate, hydrated alumina, colloidal silica and equivalents thereof having a radioactive dentin abrasion value of less than about 300 and (2) about 1 to 10% of normal calcium pyrophosphate having a radioactive dentin abrasion value of about 1170 in about 50% aqueous slurry.
Claim 2
Dependent Claim
91 words
A dentifrice composition having improved polishing power comprising (1) about 19 to 85% of a water-insoluble primary polishing agent selected from the group consisting of insoluble sodium metaphosphate, insoluble potassium metaphosphate, dental grade calcium pyrophosphate, magnesium orthophosphate, tricalcium orthophosphate, dicalcium phosphate dihydrate, anhydrous dicalcium phosphate, calcium carbonate, magnesium carbonate, hydrated alumina, colloidal silica and equivalents thereof having a radioactive dentin abrasion value of less than about 300 and (2) about 1 to 10% of normal calcium pyrophosphate having a radioactive dentin abrasion value of about 1170 in about 50% aqueous slurry.
Claim 3
Dependent Claim
17 words
The dentifrice composition of claim 1 wherein about 2 to 5% of normal calcium pyrophosphate is present.
Claim 4
Dependent Claim
30 words
The dentifrice composition claimed in claim 1 wherein said water insoluble primary polishing agent has a radioactive dental abrasion value of less than about 300 in about 50% aqueous slurry.
Claim 5
Dependent Claim
28 words
The composition of claim 3 wherein said water insoluble primary polishing agent is selected from the group consisting of dicalcium phosphate-dihydrate, hydrated alumina, silica xerogel and calcium carbonate.
Claim 6
Dependent Claim
14 words
The composition as defined in claim 1 and a carrier for said polishing agents.
Claim 7
Dependent Claim
18 words
The composition of claim 5 wherein said carrier comprises water, humectant and gelling agent is an aqueous vehicle.
Claim 8
Dependent Claim
35 words
The composition of claim 5 wherein said carrier includes a dentally beneficial fluorine containing compound, which fluorine-containing compound is present in an amount necessary to provide 0.01-1% by weight of the carrier of water-soluble fluorine.
Claim 9
Dependent Claim
21 words
The composition of claim 6 wherein said fluorine-containing compound is selected from the group consisting of stannous fluoride and sodium monofluorophosphate.
Claim 10
Dependent Claim
22 words
The toothpaste as defined in claim 6 wherein said dental vehicle contains as humectant sorbitol and as gelling agent sodium carboxymethyl cellulose.
Claim 11
Dependent Claim
17 words
The toothpaste as defined in claim 4 wherein said water-insoluble primary polishing agent is dicalcium phosphate dihydrate.
Claim 12
Dependent Claim
17 words
The toothpaste as defined in claim 4 wherein said water-insoluble primary dental polishing agent is calcium carbonate.
Claim 13
Dependent Claim
17 words
The toothpaste as defined in claim 4 wherein said water-insoluble primary dental polishing agent is hydrated alumina.
Claim 14
Dependent Claim
17 words
The toothpaste as defined in claim 4 wherein said water-insoluble primary dental polishing agent is silica xerogel.
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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |