US4325939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc derivatives and their use in dental compositions
Assignee: TOPOL-DEP Corp A CORP OF
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Filing: 1980-09-22
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Granted: 1982-04-20
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Expires: 2000-09-22
Abstract
Abstract A novel zinc compound, an alkali metal or ammonium zinc citrate, is prepared for use in dental compositions and especially in mouthwash compositions to provide mouthwashes with less astringency without loss of anti-odor properties, improved water solubility of the zinc compound and improved chemical compatibility when ionic fluoride salts are employed in compositions along with the zinc compound.
Inventors
- 👤 Nutan B. Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:59
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/27; A61K8/30; A61K8/33; A61K8/36; A61K8/365
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
16 words
A compound selected from the group consisting of an ammonium or an alkali metal zinc citrate.
Claim 2
Dependent Claim
16 words
A compound selected from the group consisting of an ammonium or an alkali metal zinc citrate.
Claim 3
Dependent Claim
13 words
An alkali metal zinc citrate of claim 1 which is sodium zinc citrate.
Claim 4
Dependent Claim
29 words
A dentifrice composition comprising about 0.1 to about 15.0% by weight of an ammonium or alkali metal zinc citrate in a carrier suitable for use in an oral cavity.
Claim 5
Dependent Claim
29 words
A dentifrice composition comprising about 0.1 to about 15.0% by weight of an ammonium or alkali metal zinc citrate in a carrier suitable for use in an oral cavity.
Claim 6
Dependent Claim
24 words
A dentifrice composition of claim 3 wherein the citrate compound is present in an amount of from about 0.2 to about 5.0% by weight.
Claim 7
Dependent Claim
24 words
A dentifrice composition of claim 3 wherein the citrate compound is present in an amount of from about 0.5 to about 2.0% by weight.
Claim 8
Dependent Claim
16 words
A dentifrice composition of claim 4 wherein the alkali metal zinc citrate is sodium zinc citrate.
Claim 9
Dependent Claim
56 words
A dentifrice composition of claim 5 which is a mouthwash comprising about 5 to about 40% by weight ethyl alcohol, about 0 to 20% by weight humectant, about 0 to 12% by weight surface active agent, about 0 to 0.5% by weight sweetening agent, about 0 to 0.3% by weight flavoring agent, and the balance water.
Claim 10
Dependent Claim
16 words
A mouthwash composition of claim 7 wherein the alkali metal zinc citrate is sodium zinc citrate.
References Cited (Backward Citations)
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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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |