US4906456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticalculus oral composition
Assignee: Colgate Palmolive Co
•
Filing: 1989-02-17
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Granted: 1990-03-06
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Expires: 2009-02-17
Abstract
Abstract An oral dentifrice composition such as a toothpaste, dental gel, toothpowder, dental tablet or lozenge containing as anticalculus agent about 4.3% to about 7% of alkali metal pyrophosphates comprising at least 4.3% of tetrapotassium pyrophosphate alone or admixed with up to 2.7% of tetrasodium pyrophosphate, and as inhibitors against enzymatic hydrolysis of such agent in saliva, a fluoride and preferably up to about 3% of a synthetic anionic polymeric polycarboxylate, and use of such composition in a program of oral hygiene and/or for inhibiting dental calculus.
Inventors
- 👤 Abdul Gaffar
- 👤 Thomas G. Polefka
- 👤 Robert J. Ferlauto, Jr.
- 👤 Rosemarie M. Crisafulli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:47
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61K8/8164
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
79 words
An oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. at least 4.3% of a mixture of alkali metal pyrophosphates containing tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio ranging from 2.7:4.3 to 1:6 and sufficient tetrapotassium pyrophosphate to avoid the occurrence of gritty particles of tetrasodium pyrophosphate in the composition, and B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions.
Claim 2
Dependent Claim
79 words
An oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. at least 4.3% of a mixture of alkali metal pyrophosphates containing tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio ranging from 2.7:4.3 to 1:6 and sufficient tetrapotassium pyrophosphate to avoid the occurrence of gritty particles of tetrasodium pyrophosphate in the composition, and B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions.
Claim 3
Dependent Claim
58 words
An oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. 4.3% to 7% of a mixture of tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio ranging from 2.7:4.3 to 1:6; and B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions.
Claim 4
Dependent Claim
58 words
An oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. 4.3% to 7% of a mixture of tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio ranging from 2.7:4.3 to 1:6; and B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions.
Claim 5
Dependent Claim
90 words
An oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions; A. 0-90% of a dentally acceptable polishing agent, B. an amount of fluoride ion source sufficient to supply 223 ppm to 9,050 ppm of fluoride ions; and C. an amount of at least one pyrophosphate source sufficient to provide at least 2.3% of pyrophosphate ion; wherein the pH of said composition is about 4.5 to about 10; and said composition contains sodium ions and potassium ions in a respective ratio of 0.1:1 to 1.04:1.
Claim 6
Dependent Claim
90 words
An oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions; A. 0-90% of a dentally acceptable polishing agent, B. an amount of fluoride ion source sufficient to supply 223 ppm to 9,050 ppm of fluoride ions; and C. an amount of at least one pyrophosphate source sufficient to provide at least 2.3% of pyrophosphate ion; wherein the pH of said composition is about 4.5 to about 10; and said composition contains sodium ions and potassium ions in a respective ratio of 0.1:1 to 1.04:1.
Claim 7
Dependent Claim
19 words
The composition of Claim 3 containing sodium ions and potassium ions in a respective ratio of 0.37:1 to 1.04:1.
Claim 8
Dependent Claim
17 words
The composition of any of Claims 1 to 4 further containing up to 0.4% dialkali metal pyrophosphate.
Claim 9
Dependent Claim
17 words
The composition of any of Claims 1 to 4 further containing up to 1% dialkali metal pyrophosphate.
Claim 10
Dependent Claim
16 words
The composition of any of Claims 1 to 6 further containing an orally acceptable silica abrasive.
Claim 11
Dependent Claim
18 words
The composition of any of Claims 1 to 7 in which the fluoride ion source comprises sodium fluoride.
Claim 12
Independent Claim
27 words
A method of inhibiting dental calculus comprising applying to dental surfaces an effective inhibiting amount of a composition as defined in any of Claims 1 to 8.
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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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |