US4997640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral compositions
Assignee: Chesebrough Ponds USA Inc
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Filing: 1988-12-19
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Granted: 1991-03-05
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Expires: 2008-12-19
Abstract
Abstract The disclosure concerns a toothpaste having antimicrobial activity packaged in a closed container comprising water, an ascorbic acid compound consisting of ascorbic acid, an ascorbic acid salt or an ascorbic acid ester and a copper catalyst for the auto-oxidation of the ascorbic acid compound during use of the toothpaste.
Inventors
- 👤 Nigel P. Bird
- 👤 Geoffrey S. Ingram
- 👤 Paul I. Riley
- 👤 James A. Ritchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:10
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/30; A61K8/67; A61K8/676; A61Q; A61Q11/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
A toothpaste having anti-anaerobic bacterial activity packaged within a closed container, the toothpaste containing from about 5% to about 60% by weight of water, from about 0.05% to about 5% by weight of an ascorbic acid compound selected from the group consisting of ascorbic acid, an ascorbic acid salt and an asorbic acid ester, from 500 to 5000 ppm fluoride, and from 1 to 1000 ppm of a copper catalyst for the auto-oxidation of the ascorbic acid compound selected from the group consisting of copper sulphate, copper halides, copper pseudohalides, copper nitrate, copper hydrotalcite, copper salts of polybasic acids in the series oxalic acid to suberic acid, copper salts of carboxylic acids in the homologous series formic acid to decanoic acid, and copper salts of glycolic acid, tartaric acid, malic acid and citric acid.
Claim 2
Dependent Claim
134 words
A toothpaste having anti-anaerobic bacterial activity packaged within a closed container, the toothpaste containing from about 5% to about 60% by weight of water, from about 0.05% to about 5% by weight of an ascorbic acid compound selected from the group consisting of ascorbic acid, an ascorbic acid salt and an asorbic acid ester, from 500 to 5000 ppm fluoride, and from 1 to 1000 ppm of a copper catalyst for the auto-oxidation of the ascorbic acid compound selected from the group consisting of copper sulphate, copper halides, copper pseudohalides, copper nitrate, copper hydrotalcite, copper salts of polybasic acids in the series oxalic acid to suberic acid, copper salts of carboxylic acids in the homologous series formic acid to decanoic acid, and copper salts of glycolic acid, tartaric acid, malic acid and citric acid.
Claim 3
Dependent Claim
24 words
A toothpaste as claimed in claim 1 wherein the copper catalyst is present in the toothpaste in the form of a water-soluble copper salt.
Claim 4
Dependent Claim
17 words
A toothpaste as claimed in claim 1 wherein the amount of copper is 10 to 200 ppm.
Claim 5
Dependent Claim
17 words
A toothpaste as claimed in claim 3 wherein the amount of copper is 30 to 100 ppm.
Claim 6
Dependent Claim
32 words
A toothpaste as claimed in claim 1 wherein the amount of the ascorbic acid compound is present in an amount of from about 0.5% to about 5% by weight of the toothpaste.
Claim 7
Dependent Claim
26 words
Method of inhibiting the growth of anaerobic bacteria in the oral cavity which comprises treating the oral cavity with a composition in accordance with claim 1.
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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) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |