US4931273A — Anticalculus oral composition

Claim 1

Independent Claim 82 words

In an oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. a mixture of tetrasodium pyrophosphate and tetrapotassium pyrophosphate; B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions; and C. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000, the improvement in which the tetrapotassium pyrophosphate is a predominant portion of said mixture.

Claim 2

Dependent Claim 82 words

In an oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. a mixture of tetrasodium pyrophosphate and tetrapotassium pyrophosphate; B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions; and C. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000, the improvement in which the tetrapotassium pyrophosphate is a predominant portion of said mixture.

Claim 3

Dependent Claim 122 words

In an oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. a mixture of alkali metal pyrophosphates containing tetrasodium pyrophosphate and tetrapotassium pyrophosphate; B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions; and C. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000, the improvement comprising employing at least 4.3% of said mixture in the composition and employing in said mixture the tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio of 2.7:4.3 to 1:6 and sufficient tetrapotassium pyrophosphate to inhibit the occurrence of solid gritty particles of tetrasodium pyrophosphate in the composition.

Claim 4

Dependent Claim 122 words

In an oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. a mixture of alkali metal pyrophosphates containing tetrasodium pyrophosphate and tetrapotassium pyrophosphate; B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions; and C. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000, the improvement comprising employing at least 4.3% of said mixture in the composition and employing in said mixture the tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio of 2.7:4.3 to 1:6 and sufficient tetrapotassium pyrophosphate to inhibit the occurrence of solid gritty particles of tetrasodium pyrophosphate in the composition.

Claim 5

Dependent Claim 98 words

In an oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. a mixture of tetrasodium pyrophosphate and tetrapotassium pyrophosphate; B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions; and C. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000, the improvement comprising employing 4.3% to 7% of said mixture in the composition and employing the tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio ranging from 2.7:4.3 to 1:6.

Claim 6

Dependent Claim 98 words

In an oral composition containing an orally acceptable aqueous vehicle and, in approximate weight amounts and proportions, A. a mixture of tetrasodium pyrophosphate and tetrapotassium pyrophosphate; B. an amount of a fluoride ion source sufficient to supply 25 ppm to 5,000 ppm of fluoride ions; and C. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000, the improvement comprising employing 4.3% to 7% of said mixture in the composition and employing the tetrasodium pyrophosphate and tetrapotassium pyrophosphate in a respective ratio ranging from 2.7:4.3 to 1:6.

Claim 7

Dependent Claim 116 words

In 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; C. an amount of at least one pyrophosphate source sufficient to provide at least 2.3% of pyrophosphate ion; and D. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000. wherein the pH of said composition is about 4.5 to about 10, the improvement comprising employing in said composition sodium ions and potassium ions in a respective ratio of 0.1:1 to 1.04:1.

Claim 8

Dependent Claim 116 words

In 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; C. an amount of at least one pyrophosphate source sufficient to provide at least 2.3% of pyrophosphate ion; and D. about 0.05 to about 3% of a synthetic anionic polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000. wherein the pH of said composition is about 4.5 to about 10, the improvement comprising employing in said composition sodium ions and potassium ions in a respective ratio of 0.1:1 to 1.04:1.

Claim 9

Dependent Claim 19 words

The composition of claim 4 containing sodium ions and potassium ions in a respective ratio of 0.37:1 to 1.04:1.

Claim 10

Dependent Claim 17 words

The composition of any of claims 1 to 5 further containing up to 0.4% dialkali metal pyrophosphate.

Claim 11

Dependent Claim 17 words

The composition of any of claims 1 to 5 further containing up to 1% dialkali metal pyrophosphate.

Claim 12

Dependent Claim 16 words

The composition of any of claims 1 to 5 further containing an orally acceptable silica abrasive.

Claim 13

Dependent Claim 18 words

The composition of any of claims 1 to 5 in which the fluoride ion source comprises sodium fluoride.

Claim 14

Dependent Claim 25 words

The composition of any of claims 1 to 5 comprising a synthetic anionic polymeric polycarboxylate having a molecular weight of about 30,000 to about 500,000.

Claim 15

Dependent Claim 17 words

The composition of any of claims 1 to 5 wherein said polymeric polycarboxylate comprises a carboxyvinyl polymer.

Claim 16

Dependent Claim 27 words

The composition of any of claims 1 to 5 wherein said polymeric polycarboxylate comprises a copolymer of maleic anhydride or acid with another polymerizable ethylenically unsaturated monomer.

Claim 17

Dependent Claim 12 words

The composition of claim 12 wherein said monomer is methyl vinyl ether.

Claim 18

Dependent Claim 15 words

The composition of claim 13 wherein said copolymer has a molecular weight of about 70,000.

Claim 19

Dependent Claim 23 words

A method of inhibiting dental calculus comprising applying to dental surfaces an effective inhibiting amount of a composition as defined in claim 14.

Claim 20

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 5.

Claim 21

Dependent Claim 20 words

The composition of any of claims 1 to 5 in which said polycarboxylate is an ammonium or alkali metal salt.

Claim 22

Dependent Claim 20 words

The composition of claim 14 in which said copolymer is in the form of an ammonium or alkali metal salt.

Claim 23

Dependent Claim 23 words

A method of inhibiting dental calculus comprising applying to dental surfaces an effective inhibiting amount of a composition as defined in claim 18.

Claim 24

Dependent Claim 23 words

A method of inhibiting dental calculus comprising applying to dental surfaces an effective inhibiting amount of a composition as defined in claim 17.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-06-04	1993-12-04	1994-06-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-06-04	1997-12-04	1998-06-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-06-04	2001-12-04	2002-06-05	$7700.00	Window Closed / Lapsed

Anticalculus oral composition

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