US3699221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental preparations
Assignee: RICHARD S GUBNER
•
Filing: 1965-02-23
•
Granted: 1972-10-17
•
Expires: 1985-02-23
Abstract
Abstract A water-containing toothpaste comprising a substantially stable solution of a non-toxic, water-soluble ionic strontium compound selected from the class consisting of strontium salts of organic chelating agents and strontium salts of inorganic sequestering agents, said strontium compound having a stability constant lower than that of its corresponding calcium salt, and a surface-active wetting agent compatible with strontium ions in an aqueous solution, the strontium cation of the strontium compound constituting between about 3.6% and about 20.5% by weight of said toothpaste, and said toothpaste being characterized by the substantial absence of substances which precipitate said strontium.
Inventors
- 👤 Murray L Schole
- 👤 Richard S Gubner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:43
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61K8/40; A61K8/44; A61K2800/00; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
18 words
The toothpaste of claim 1 wherein said strontium compound is a strontium salt of an inorganic sequestering agent.
Claim 2
Dependent Claim
17 words
The toothpaste of claim 2 wherein said strontium compound is a strontium salt of a condensed phosphate.
Claim 3
Dependent Claim
18 words
The toothpaste of claim 1 wherein said strontium compound is a strontium salt of an organic chelating agent.
Claim 4
Dependent Claim
15 words
The toothpaste of claim 4 wherein said strontium compound is strontium disodium ethylene diamine tetraacetate.
Claim 5
Dependent Claim
12 words
The toothpaste of claim 4 wherein said strontium compound is strontium citrate.
Claim 6
Dependent Claim
12 words
The toothpaste of claim 4 wherein said strontium compound is strontium salicylate.
Claim 7
Dependent Claim
12 words
The toothpaste of claim 4 wherein said strontium compound is strontium gentisate.
Claim 8
Dependent Claim
12 words
The toothpaste of claim 4 wherein said strontium compound is strontium gluconate.
Claim 9
Dependent Claim
12 words
The toothpaste of claim 4 wherein said strontium compound is strontium acetate.
Claim 10
Dependent Claim
74 words
A water-containing toothpaste comprising a substantially stable solution of non-toxic, water-soluble ionic strontium chelate having a stability constant lower than that of its corresponding calcium chelate and a surface-active wetting agent compatible with strontium ions in an aqueous solution, said toothpaste being characterized by the substantial absence of substance which precipitate said strontium, the strontium cation of the strontium chelate constituting between about 3.6 percent and about 20.5 percent by weight of said toothpaste.
Claim 11
Dependent Claim
91 words
A water-containing toothpaste comprising a substantially stable solution of a non-toxic, water-soluble ionic strontium chelate having a stability constant lower than that of its corresponding calcium chelate, a surface-active wetting agent compatible with strontium ions in an aqueous solution, and a polishing agent selected from the class consisting of strontium phosphate, strontium carbonate, barium sulfate and barium carbonate, said toothpaste being characterized by the substantial absence of substances which precipitate said strontium, the strontium cation of the strontium chelate constituting between about 3.6 and 20.5 percent by weight of saId toothpaste.
Claim 12
Dependent Claim
69 words
A water-containing toothpaste comprising a solution of a non-toxic strontium chelate having a stability constant lower than that of its corresponding calcium chelate providing strontium ions, a surface-active wetting agent, a polishing agent, and characterized by the substantial absence of substances incompatible with the strontium ions in an aqueous solution, the strontium cation of the strontium chelate constituting between about 3.6 and 20.5 percent by weight of said toothpaste.
Claim 13
Dependent Claim
88 words
A dentifrice comprising a substantially stable, water-soluble strontium compound selected from the class consisting of strontium salts of organic chelating agents and strontium salts of inorganic sequestering agents, said strontium compound having a stability constant lower than that of its corresponding calcium salt, a surface-active wetting agent compatible with strontium ions in an aqueous solution, the strontium cation of the strontium compound constituting between about 3.6 and 20.5 percent by weight of said dentifrice, said dentifrice being characterized by the substantial absence of substances which precipitate strontium ions.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |