US4515772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral compositions
Assignee: Procter and Gamble Co
•
Filing: 1984-03-19
•
Granted: 1985-05-07
•
Expires: 2004-03-19
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
2026-10-26 12:15
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61Q; A61Q11/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
An oral composition in the form of a toothpaste comprising: (a) from about 10% to about 70%, of a dental abrasive selected from the group consisting of insoluble metaphosphates, alumina, thermosetting polymerized resins and silica; (b) an amount of a fluoride ion source sufficient to supply from about 50 ppm to about 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 . (d) the remainder water; wherein the pH of said composition is from about 6.0 to about 10.0 and the composition does not contain more than about 4.0% K 4 P 2 O 7 .
Claim 2
Dependent Claim
128 words
An oral composition in the form of a toothpaste comprising: (a) from about 10% to about 70%, of a dental abrasive selected from the group consisting of insoluble metaphosphates, alumina, thermosetting polymerized resins and silica; (b) an amount of a fluoride ion source sufficient to supply from about 50 ppm to about 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 . (d) the remainder water; wherein the pH of said composition is from about 6.0 to about 10.0 and the composition does not contain more than about 4.0% K 4 P 2 O 7 .
Claim 3
Dependent Claim
15 words
An oral composition according to claim 1 wherein the abrasive is a silica dental abrasive.
Claim 4
Dependent Claim
15 words
An oral composition according to claim 2 wherein sodium fluoride is the fluoride ion source.
Claim 5
Dependent Claim
23 words
An oral composition according to claim 3 wherein the pyrophosphate ion is provided by a mixture of disodium pyrophosphate and tetra sodium pyrophosphate.
Claim 6
Dependent Claim
24 words
An oral composition according to claim 3 wherein the pyrophosphate ion is provided by a mixture of disodium pyrophosphate, tetrasodium pyrophosphate and tetrapotassium pyrophosphate.
Claim 7
Dependent Claim
20 words
An oral composition according to claim 3 which in addition contains from 0 to about 10% of a sudsing agent.
Claim 8
Dependent Claim
20 words
An oral composition according to claim 3 which in addition contains from about 0.1% to about 10% of a binder.
Claim 9
Dependent Claim
19 words
An oral composition according to claim 3 which in addition contains from 0 to about 70% of a humectant.
References Cited (Backward Citations)
US3137632A
Cited
US2772203A
Cited
US2941926A
Cited
US3431339A
Cited
US3737522A
Cited
JPS4945A
Cited
US3927202A
Cited
US3927201A
Cited
US4002732A
Cited
US4132772A
Cited
US4089943A
Cited
US4066745A
Cited
US4069311A
Cited
US4174387A
Cited
US4075316A
Cited
US4071614A
Cited
US4241049A
Cited
US4309409A
Cited
US4041149A
Cited
US4130636A
Cited
US4264580A
Cited
US4340583A
Cited
US4244931A
Cited
US4247526A
Cited
US4235874A
Cited
US4296096A
Cited
US4314990A
Cited
US4314990B1
Cited
US4301143A
Cited
US4357317A
Cited
US4348382A
Cited
US4323551A
Cited
US4356168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |