US5188818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothpaste composition containing strontium salt of maleic anhydride-methyl vinyl ether copolymer
Assignee: ISP CAPITAL Inc
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Filing: 1992-03-30
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Granted: 1993-02-23
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Expires: 2012-03-30
Abstract
Abstract A toothpaste composition is provided which includes the strontium salt of maleic anhydride-methyl vinyl ether copolymer. This ingredient is capable of desensitizing the nerve endings of a tooth in saliva or water because of an extension of the contact time of the strontium on the tooth surface.
Inventors
- 👤 John J. Merianos
- 👤 Paul Garelick
- 👤 Herbert A. Lieberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:17
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/72; A61K8/81; A61K8/8164; A61Q; A61Q11/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
22 words
A toothpaste composition containing about 1-20% by weight of the strontium salt of the copolymer of maleic anhydride and methyl vinyl ether.
Claim 2
Dependent Claim
22 words
A toothpaste composition containing about 1-20% by weight of the strontium salt of the copolymer of maleic anhydride and methyl vinyl ether.
Claim 3
Dependent Claim
13 words
A toothpaste composition according to claim 1 wherein said amount is about 5-10%.
Claim 4
Dependent Claim
13 words
A toothpaste composition according to claim 1 wherein said amount is about 7.5%.
Claim 5
Dependent Claim
10 words
A toothpaste composition according to claim 1 which contains water.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |