US5059417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peroxide gel dentifrice
Assignee: Church and Dwight Co Inc
•
Filing: 1990-06-26
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Granted: 1991-10-22
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Expires: 2010-06-26
Abstract
Abstract An oral composition is provided in the form of a clear gel dentrifice containing hydrogen peroxide and a polyoxyethylene-poloxypropylene copolymer. The gel is stabilized against loss of viscosity at low temperatures by the presence of glycerol in amounts more than 30% but less than 50%. The weight ratio of glycerol to copolymer must range from 1:0.7 to 1:0.4. Advantageously for peroxide stability, the composition has a pH of less than 3. Phosphoric acid is beneficial as the acidifying agent.
Inventors
- 👤 David R. Williams
- 👤 Christine W. Ryles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:18
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/90; A61K8/02; A61K8/04; A61K8/042; A61K8/19; A61K8/22; A61K8/30; A61K8/33; A61K8/34; A61K8/345; A61Q; A61Q11/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
An oral composition comprising: (i) about 0.1 to about 10% by weight of a peroxygen compound; (ii) from more than 30% to less than 50% by weight of glycerol; and (iii) a polyoxyethylene-polyoxypropylene copolymer in an amount so that a weight ratio of glycerol to copolymer ranges from 1:0.7 to 1:0.4, the composition having a cohesion value ranging from 100 to 360 g and having a pH of less than 3.03.
Claim 2
Dependent Claim
71 words
An oral composition comprising: (i) about 0.1 to about 10% by weight of a peroxygen compound; (ii) from more than 30% to less than 50% by weight of glycerol; and (iii) a polyoxyethylene-polyoxypropylene copolymer in an amount so that a weight ratio of glycerol to copolymer ranges from 1:0.7 to 1:0.4, the composition having a cohesion value ranging from 100 to 360 g and having a pH of less than 3.03.
Claim 3
Dependent Claim
17 words
An oral composition according to claim 1, wherein glycerol is present from 35% to 45% by weight.
Claim 4
Dependent Claim
19 words
An oral composition according to claim 1, wherein the polyoxyethylene-polyoxypropylene copolymer is present from 18% to 25% by weight.
Claim 5
Dependent Claim
20 words
An oral composition according to claim 1, wherein the weight ratio of glycerol to copolymer ranges from 1:0.6 to 1:0.44.
Claim 6
Dependent Claim
15 words
An oral composition according to claim 1, wherein the pH is no higher than 2.8.
Claim 7
Dependent Claim
21 words
An oral composition according to claim 5, wherein a low pH is maintained with a phosphorus type organic or inorganic acid.
Claim 8
Dependent Claim
13 words
An oral composition according to claim 6, wherein the acid is phosphoric acid.
Claim 9
Dependent Claim
12 words
An oral composition according to claim 1, held within a pump package.
Claim 10
Dependent Claim
17 words
An oral composition according to claim 1, wherein thickening agents other than copolymer and glycerol are absent.
Claim 11
Dependent Claim
22 words
An oral composition according to claim 1, further comprising colorants present in an effective amount to impart a color to the composition.
Claim 12
Dependent Claim
17 words
An oral composition according to claim 1, wherein the composition is in the form of a gel.
Claim 13
Dependent Claim
12 words
An oral composition according to claim 11, wherein the gel is transparent.
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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) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |