USRE30675E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice
Assignee: Murray L. Schole
•
Filing: 1979-12-26
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Granted: 1981-07-14
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Expires: 1999-12-26
Abstract
Abstract A dentifrice suitable for removing calculus and preventing the build-up of calculus on tooth enamel which contains strontium edatate and a ricinoleate, which have been found to provide a synergistic effect in both removal of calculus and prevention of its build-up.
Inventors
- 👤 Murray L. Schole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
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: 5
Claim 1
Independent Claim
55 words
A water-containing dentifrice consisting essentially of strontium edatate in an amount sufficient to provide from about 2.5 wt. % to about 25 wt. % of strontium .[.ion.]. .Iadd.edatate .Iaddend.and from about 0.1 wt. % to about 10 wt. % of a ricinoleate compound said dentifrice being free from strontium edatate-sequestering Ca, Mg, Al, Sn metal.
Claim 2
Dependent Claim
55 words
A water-containing dentifrice consisting essentially of strontium edatate in an amount sufficient to provide from about 2.5 wt. % to about 25 wt. % of strontium .[.ion.]. .Iadd.edatate .Iaddend.and from about 0.1 wt. % to about 10 wt. % of a ricinoleate compound said dentifrice being free from strontium edatate-sequestering Ca, Mg, Al, Sn metal.
Claim 3
Dependent Claim
13 words
A dentrifrice according to claim 1 in which the ricinoleate is sodium ricinoleate.
Claim 4
Independent Claim
64 words
A method for controlling calculus which comprises applying to the teeth a water-containing dentifrice consisting essentially of strontium edatate in an amount sufficient to provide from about 2.5 wt. % to about 25 wt. % of strontium .[.ion.]. .Iadd.edatate .Iaddend.and about 0.1 wt. % to about 10 wt. % of a ricinoleate said dentifrice being free from strontium edatate-sequestering Ca, Mg, Al, Sn metal.
Claim 5
Independent Claim
64 words
A method for controlling calculus which comprises applying to the teeth a water-containing dentifrice consisting essentially of strontium edatate in an amount sufficient to provide from about 2.5 wt. % to about 25 wt. % of strontium .[.ion.]. .Iadd.edatate .Iaddend.and about 0.1 wt. % to about 10 wt. % of a ricinoleate said dentifrice being free from strontium edatate-sequestering Ca, Mg, Al, Sn metal.
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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |