US4011309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice composition and method for desensitizing sensitive teeth
Assignee: Sunstar Americas Inc
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Filing: 1976-01-14
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Granted: 1977-03-08
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Expires: 1996-01-14
Abstract
Abstract A dentifrice composition and method for desensitizing teeth is disclosed. The dentifrice composition is an aqueous gel comprising citric acid, sodium citrate, a non-ionic surfactant which is the condensation product of a normally-solid, water-soluble, high molecular weight condensation product of ethylene oxide and polypropylene glycol and containing about 70% polyoxyethylene, and water. The dentifrice composition can be topically applied to sensitive teeth to desensitize them.
Inventors
- 👤 Herman J. Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61K6/00; A61K6/60; A61K6/69; A61K8/72; A61K8/90; A61Q; A61Q11/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
A tooth desensitizing dentifrice composition in the form of an aqueous gel comprising from about 0.1 to about 3 percent by weight of citric acid, from about 0.3 to about 9 percent of sodium citrate, from about 19 to about 25 percent of a normally-solid, water-soluble condensation product of ethylene oxide and polypropylene glycol, said condensation product having a molecular weight of about 8,000 to about 14,000, and a polyoxyethylene content of from about 65 to about 80 percent by weight, and water.
Claim 2
Dependent Claim
83 words
A tooth desensitizing dentifrice composition in the form of an aqueous gel comprising from about 0.1 to about 3 percent by weight of citric acid, from about 0.3 to about 9 percent of sodium citrate, from about 19 to about 25 percent of a normally-solid, water-soluble condensation product of ethylene oxide and polypropylene glycol, said condensation product having a molecular weight of about 8,000 to about 14,000, and a polyoxyethylene content of from about 65 to about 80 percent by weight, and water.
Claim 3
Dependent Claim
55 words
The tooth desensitizing dentifrice composition of Claim 1 comprising about 0.5 percent citric acid, about 1.5 percent sodium citrate, about 22 percent of said condensation product of ethylene oxide and polypropylene glycol, said condensation product havng an average molecular weight of about 12,500 and a polyoxyethylene content of about 70 percent by weight, and water.
Claim 4
Independent Claim
92 words
The method of desensitizing sensitive teeth comprising topically applying to teeth a tooth desensitizing dentifrice composition which is an aqueous gel comprising from about 0.1 to about 3 percent by weight of citric acid, from about 0.3 to about 9 percent of sodium citrate, from about 19 to about 25 percent of a normally-solid, water-soluble condensation product of ethylene oxide and polypropylene glycol, said condensation product having a molecular weight of about 8,000 to about 14,000, and a polyoxyethylene content of from about 65 to about 80 percent by weight, and water.
Claim 5
Independent Claim
92 words
The method of desensitizing sensitive teeth comprising topically applying to teeth a tooth desensitizing dentifrice composition which is an aqueous gel comprising from about 0.1 to about 3 percent by weight of citric acid, from about 0.3 to about 9 percent of sodium citrate, from about 19 to about 25 percent of a normally-solid, water-soluble condensation product of ethylene oxide and polypropylene glycol, said condensation product having a molecular weight of about 8,000 to about 14,000, and a polyoxyethylene content of from about 65 to about 80 percent by weight, and water.
Claim 6
Dependent Claim
63 words
The method of desensitizing sensitive teeth according to claim 3 in which said tooth desensitizing composition comprises about 0.5 percent citric acid, about 1.5 percent sodium citrate, about 22 percent of said condensation product of ethylene oxide and polypropylene glycol, said condensation product having an average molecular weight of about 12,500 and a polyoxyethylene content of about 70 percent by weight, and water.
References Cited (Backward Citations)
US3876759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |