US4806339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral compositions
Assignee: Procter and Gamble Co
•
Filing: 1987-06-09
•
Granted: 1989-02-21
•
Expires: 2007-06-09
Abstract
Abstract Disclosed are oral compositions containing particular pyrophosphate salts which provide an anticalculus benefit.
Inventors
- 👤 John J. Parran, Jr.
- 👤 Nabil Y. Sakkab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:38
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
An oral composition in the form of a toothpaste comprising: (a) from about 10% to about 70% of a dental abrasive which will allow for the pyrophosphate ion concentration specified herein below; (b) an amount of a fluoride ion source capable of providing from about 50 ppm to 3500 ppm of fluoride ions; (c) an amount of a pyrophosphate salt selected from the group consisting of dialkali metal and mixtures of dialkali metal and tetraalkali metal pyrophosphate salts sufficient to provide at least 1.5% P 2 O 7 -4 ; and (d) the remainder water; wherein the pH of said composition is from about 6.0 to about 10.0.
Claim 2
Dependent Claim
108 words
An oral composition in the form of a toothpaste comprising: (a) from about 10% to about 70% of a dental abrasive which will allow for the pyrophosphate ion concentration specified herein below; (b) an amount of a fluoride ion source capable of providing from about 50 ppm to 3500 ppm of fluoride ions; (c) an amount of a pyrophosphate salt selected from the group consisting of dialkali metal and mixtures of dialkali metal and tetraalkali metal pyrophosphate salts sufficient to provide at least 1.5% P 2 O 7 -4 ; and (d) the remainder water; wherein the pH of said composition is from about 6.0 to about 10.0.
Claim 3
Dependent Claim
64 words
A process for reducing caclulus on dental enamel comprising contacting the enamel surfaces in the mouth with a dentifrice composition comprising a dental abrasive compatible with fIuoride and pyrophosphate ions a soluble pyrophosphate ion source capable of providing at least 1.5% P 2 O 7 -4 , a soluble fluoride ion source capable of providing 50 ppm to 3500 ppm fluoride ions and water.
Claim 4
Dependent Claim
64 words
A process for reducing caclulus on dental enamel comprising contacting the enamel surfaces in the mouth with a dentifrice composition comprising a dental abrasive compatible with fIuoride and pyrophosphate ions a soluble pyrophosphate ion source capable of providing at least 1.5% P 2 O 7 -4 , a soluble fluoride ion source capable of providing 50 ppm to 3500 ppm fluoride ions and water.
Claim 5
Dependent Claim
24 words
A process according to claim 2 wherein the abrasive is selected from the group consisting of insoluble metapohsophates, alumina, thermosetting polymerized resins and silica.
Claim 6
Dependent Claim
14 words
A process according to claim 3 wherein the fluoride ion source is sodium fluoride.
Claim 7
Dependent Claim
22 words
A process according to claim 4 wherein the composition in addition contains from about 0% to about 10% of a sudsing agent.
Claim 8
Dependent Claim
21 words
A process according to claim 5 wherein the composition in addition contains from about 0.1% to about 10% of a binder.
Claim 9
Dependent Claim
20 words
A process according to claim 6 wherein the composition additionally contains from about 0% to about 70% of a humectant.
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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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |