Patent US4684518A successfully refreshed from Google Patents.
US4684518A
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US
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Oral compositions
Assignee: Procter and Gamble Co
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Filing: 1986-03-12
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Granted: 1987-08-04
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Expires: 2006-03-12
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 18:14
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
A process for reducing the incidence of calculus on dental enamel comprising contacting the enamel surfaces in the mouth with a composition comprising a soluble pyrophosphate source capable of providing at least 1.5% P 2 O 7 -4 and from about 50 ppm to about 3500 ppm F.
Claim 2
Dependent Claim
48 words
A process for reducing the incidence of calculus on dental enamel comprising contacting the enamel surfaces in the mouth with a composition comprising a soluble pyrophosphate source capable of providing at least 1.5% P 2 O 7 -4 and from about 50 ppm to about 3500 ppm F.
Claim 3
Dependent Claim
35 words
A process according to claim 1 wherein the P 2 O 7 -4 source is selected from the group consisting of dialkali metal pyrophosphate salts and mixtures of dialkali metal and tetraalkali metal pyrophosphate salts.
Claim 4
Dependent Claim
24 words
A process according to claim 1 wherein said composition is in the form of a dentrifrice which in addition contains a silica dental abrasive.
Claim 5
Dependent Claim
16 words
A process according to claim 1 wherein said composition is in the form of a mouthwash.
Claim 6
Dependent Claim
17 words
A process according to claim 1 wherein said composition is in the form of a liquid dentrifrice.
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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) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |