US4992258A
Expired / Lapsed
US
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Dentrifice composition
Assignee: Colgate Palmolive Co
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Filing: 1989-10-23
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Granted: 1991-02-12
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Expires: 2009-10-23
Abstract
Abstract A dentifrice for treatment of hypersensitive dentine containing montmorrolinite clay.
Inventors
- 👤 Stephen C. Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:45
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61K8/19; A61K8/26; A61K8/81; A61K8/8164; A61Q; A61Q11/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
25 words
A dentifrice comprising at least about 0.1% by weight of montmorillonite, clay in a dentifrice vehicle and about 0.1-3% by weight of a polymeric polycarboxylate.
Claim 2
Dependent Claim
25 words
A dentifrice comprising at least about 0.1% by weight of montmorillonite, clay in a dentifrice vehicle and about 0.1-3% by weight of a polymeric polycarboxylate.
Claim 3
Dependent Claim
35 words
The dentifrice claimed in claim 1 wherein said polymeric polycarboxylate is present in amount of about 0.5-1.5% by weight and is a linear polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000.
Claim 4
Dependent Claim
27 words
The dentifrice claimed in claim 2 wherein said linear polymeric polycarboxylate is maleic anhydride-methyl vinyl ether copolymer having a molecular weight of about 30,000 to about 1,000,000.
Claim 5
Dependent Claim
19 words
The dentifrice claimed in claim 1 wherein said montmorillonite clay is present in amount of about 0.1-10% by weight.
Claim 6
Dependent Claim
19 words
The dentifrice claimed in claim 4 wherein said montmorillonite clay is present in amount of about 0.5-5% by weight.
Claim 7
Independent Claim
31 words
A method for desensitizing hypersensitive dentin by applying thereto a dentifrice composition comprising at least about 0.1% by weight of montmorillonite clay and about 0.1-3% by weight of a polymeric polycarboxylate.
Claim 8
Independent Claim
31 words
A method for desensitizing hypersensitive dentin by applying thereto a dentifrice composition comprising at least about 0.1% by weight of montmorillonite clay and about 0.1-3% by weight of a polymeric polycarboxylate.
Claim 9
Dependent Claim
35 words
The method claimed in claim 6 wherein said polymeric polycarboxylate is present in amount of about 0.5-1.5% by weight and is a linear polymeric polycarboxylate having a molecular weight of about 1,000 to about 1,000,000.
Claim 10
Dependent Claim
27 words
The method claimed in claim 7 wherein said linear polymeric polycarboxylate is maleic anhydride-methyl vinyl ether copolymer having a molecular weight of about 30,000 to about 1,000,000.
Claim 11
Dependent Claim
19 words
The method claimed in claim 6 wherein said montmorillonite clay is present in amount of about 0.1-10% by weight.
Claim 12
Dependent Claim
19 words
The method claimed in claim 9 wherein said montmorillonite clay is present in amount of about 0.5-5% by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-02-11 | 1994-08-13 | 1995-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-11 | 1998-08-13 | 1999-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-11 | 2002-08-13 | 2003-02-12 | $7700.00 | Window Closed / Lapsed |