US5270031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentinal desensitizing compositions
Assignee: Block Drug Co Inc
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Filing: 1991-12-20
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Granted: 1993-12-14
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Expires: 2011-12-20
Abstract
Abstract A composition containing a water soluble or water swellable polyelectrolyte or salts thereof in a dentifrice base or other oral compositions which can be used for relieving pain and discomfort caused by hypersensitive teeth. The salts can be single or mixed partial salts of the polyelectrolyte.
Inventors
- 👤 Richard M. Lim
- 👤 James K. Herms
- 👤 Joseph Synodis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:55
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61Q; A61Q11/00; A61K8/00; A61K8/18; A61K8/19; A61K8/27; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61P; A61P1/00; A61P1/02; A61P25/00; A61P25/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
53 words
In a method of desensitizing teeth by applying thereto a desensitizing amount of an oral composition containing a desensitizing agent, the improvement which comprises employing as the desensitizing agent, at least one water soluble or water swellable polyelectrolyte which is polyacrylic acid salt having a degree of neutralization from about 20 to 100%.
Claim 2
Dependent Claim
53 words
In a method of desensitizing teeth by applying thereto a desensitizing amount of an oral composition containing a desensitizing agent, the improvement which comprises employing as the desensitizing agent, at least one water soluble or water swellable polyelectrolyte which is polyacrylic acid salt having a degree of neutralization from about 20 to 100%.
Claim 3
Dependent Claim
37 words
The method of desensitizing teeth of claim 1 in which the polyelectrolyte cation is selected from the group consisting of ammonium, alkylammonium, calcium, sodium, potassium, strontium, zinc, aluminum, manganese, tin, iron, barium, lanthanum, titanium, bismuth and copper.
Claim 4
Dependent Claim
18 words
The method of desensitizing teeth of claim 2 in which the cation is sodium, calcium, potassium or strontium.
Claim 5
Dependent Claim
19 words
The method of desensitizing teeth in claim 1 in which said oral composition further comprises an additional desensitizing agent.
Claim 6
Dependent Claim
20 words
The method of desensitizing teeth of claim 1 in which the oral composition is in the form of a dentrifice.
Claim 7
Dependent Claim
28 words
The method of desensitizing teeth of claim 1 in which the oral composition is in the form of a mouthwash, gel, chewing gum, lozenge or buccal adhesive patch.
Claim 8
Dependent Claim
25 words
The method of desensitizing teeth of claim 1 in which the amount of desensitizing agent is about 0.1 to 30% by weight of the composition.
Claim 9
Dependent Claim
19 words
The method of desensitizing teeth of claim 10 in which the amount is about 1 to 15% by weight.
Claim 10
Dependent Claim
19 words
The method of desensitizing teeth of claim 11 in which the amount is about 2 to 12% by weight.
Claim 11
Dependent Claim
16 words
The method of desensitizing teeth of claim 1 in which the cation is potassium or strontium.
Claim 12
Dependent Claim
39 words
The method of desensitizing teeth of claim 1 in which the polyelectrolyte is water swellable and is a salt of polyacrylic acid having molecular weight of 450,000 to 4,000,000 and a degree of neutralization of about 40 to 90%.
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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) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |