Patent US2512259A successfully refreshed from Google Patents.
US4684518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral compositions
Assignee: Procter and Gamble Co
•
Filing: 1986-03-12
•
Granted: 1987-08-04
•
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 17:04
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.
References Cited (Backward Citations)
US3137632A
Cited
US2772203A
Cited
US2941926A
Cited
US3737522A
Cited
JPS4945A
Cited
US3927201A
Cited
US3927202A
Cited
US4244931A
Cited
US4247526A
Cited
US4323551A
Cited
US4515772A
Cited
US4590066A
Cited
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 |