US4407788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice
Assignee: Colgate Palmolive Co
•
Filing: 1982-04-22
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Granted: 1983-10-04
•
Expires: 2002-04-22
Abstract
Abstract A dentifrice containing a siliceous polishing material and binding or gelling agent including resinous poly(ethylene oxide). The polishing agent flocculates in the presence of the resinous poly(ethylene oxide) and provides the dentifrice with desirable stain removal effectiveness without unduly raising dentin abrasion. Foaming character is also achieved when a polyoxyethylene-polyoxypropylene block copolymer and xanthan are present.
Inventors
- 👤 Diana Kiozpeoplou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:10
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/046; A61K8/18; A61K8/19; A61K8/26; A61K8/30; A61K8/60; A61K8/72; A61K8/73; A61K8/731; A61K8/84; A61K8/86; A61K8/90; A61Q; A61Q11/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
A dentifrice which reduces dental stain comprising about 20-80% by weight of a liquid humectant vehicle, about 5-50% by weight of a siliceous polishing material and about 0.05-5% by weight of a resinous poly(ethylene oxide), said dentifrice containing flocculated particles formed by said siliceous polishing material in the presence of said poly(ethylene oxide).
Claim 2
Dependent Claim
53 words
A dentifrice which reduces dental stain comprising about 20-80% by weight of a liquid humectant vehicle, about 5-50% by weight of a siliceous polishing material and about 0.05-5% by weight of a resinous poly(ethylene oxide), said dentifrice containing flocculated particles formed by said siliceous polishing material in the presence of said poly(ethylene oxide).
Claim 3
Dependent Claim
39 words
The dentifrice claimed in claim 1 wherein said resinous poly(ethylene oxide) has a reduced viscosity of at least 0.5 as measured at a concentration of 0.2 gram of said poly(ethylene oxide) in 100 milliliters of acetonitrile at 30° C.
Claim 4
Dependent Claim
20 words
The dentifrice claimed in claim 2 wherein said resinous poly(ethylene oxide) is present in amount of about 0.1-1.5% by weight.
Claim 5
Dependent Claim
26 words
The dentifrice claimed in claim 1 wherein said siliceous polishing material is a complex alkali metal aluminosilicate having a refractive index of from 1.44 to 1.47.
Claim 6
Dependent Claim
22 words
The dentifrice claimed in claim 4 wherein said alkali metal aluminosilicate is sodium aluminosilicate wherein silica is combined with about 0.1-3% alumina.
Claim 7
Dependent Claim
21 words
The dentifrice claimed in claim 1 wherein said flocculated particles have an apparent particle size of about 44 to 177 microns.
References Cited (Backward Citations)
US2677700A
Cited
US2773801A
Cited
US3020230A
Cited
US2991229A
Cited
US3911104A
Cited
DE2204670A1
Cited
GB1425922A
Cited
US3906090A
Cited
US3976765A
Cited
GB1450881A
Cited
US4036949A
Cited
US4011309A
Cited
US4206198A
Cited
US4259477A
Cited
US4323552A
Cited
US4343785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |