US4978522A
Expired / Lapsed
US
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Oral compositions
Assignee: Procter and Gamble Co
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Filing: 1989-03-09
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Granted: 1990-12-18
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Expires: 2009-03-09
Abstract
Abstract Oral compositions effective against caries containing strontium EDTA and a soluble fluoride ion source are described herein.
Inventors
- 👤 Melvin A. Barbera
- 👤 Francis O. Agricola
- 👤 Robert V. Faller
- 👤 Worth D. Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:45
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/25; A61K8/30; A61K8/40; A61K8/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
An oral composition effective against caries comprising: (a) an amount of a strontium disodium ethylenediamine tetraacetate, SrEDTA complex sufficient to provide from about 2 to about 900 ppm Sr ++ ; (b) an amount of a soluble fluoride ion source sufficient to provide from about 25 to about 50,000 ppm F - ; and (c) a pharmaceutically acceptable carrier.
Claim 2
Dependent Claim
59 words
An oral composition effective against caries comprising: (a) an amount of a strontium disodium ethylenediamine tetraacetate, SrEDTA complex sufficient to provide from about 2 to about 900 ppm Sr ++ ; (b) an amount of a soluble fluoride ion source sufficient to provide from about 25 to about 50,000 ppm F - ; and (c) a pharmaceutically acceptable carrier.
Claim 3
Dependent Claim
18 words
An oral composition according to claim 1 in the form of a toothpaste containing a silica dental abrasive.
Claim 4
Dependent Claim
26 words
A method of applying fluoride ions to tooth enamel comprising applying to said enamel a safe and effective amount of a composition according to claim 1.
Claim 5
Dependent Claim
17 words
A method according to claim 3 wherein the composition contains sodium fluoride as the fluoride ion source.
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) | 1993-12-17 | 1994-06-18 | 1994-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-17 | 1998-06-18 | 1998-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-17 | 2002-06-18 | 2002-12-18 | $7700.00 | Window Closed / Lapsed |