Patent US4618488A successfully refreshed from Google Patents.
US4618488A
Expired / Lapsed
US
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Toothpaste composition
Assignee: Lion Corp
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Filing: 1985-07-26
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Granted: 1986-10-21
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Expires: 2005-07-26
Abstract
Abstract A stable toothpaste composition which includes as an abrasive amorphous silica or silicate having a specific surface area of 5 to 100 m 2 /g as measured by BET method with nitrogen adsorption and a specific surface area of 100 to 400 m 2 /g as measured by BET method with water vapor adsorption.
Inventors
- 👤 Tsutomu Maeyama
- 👤 Shigeru Ishii
- 👤 Kenji Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:24
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25; A61Q; A61Q11/00; B; B82; B82Y; B82Y30/00; C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/18; C01B33/187; C01B33/193; A61K2800/00; A61K2800/20; A61K2800/26; A61K2800/262; C01P; C01P2002/00; C01P2002/02; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/64; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/14; C01P2006/60
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
99 words
A toothpaste composition, comprising: an abrasive selected from the group consisting of amorphous silica, silicate and mixtures thereof having a specific surface area of 5 to 100 m 2 /g as measured by the BET method with nitrogen adsorption and a specific surface area of 100 to 400 m 2 /g as measured by the BET method with water vapor adsorption, said abrasive having a ratio of the specific surface area as measured by the BET method with water vapor absorption to the specific area as measured by the BET method with nitrogen adsorption of from 2 to 30.
Claim 2
Dependent Claim
99 words
A toothpaste composition, comprising: an abrasive selected from the group consisting of amorphous silica, silicate and mixtures thereof having a specific surface area of 5 to 100 m 2 /g as measured by the BET method with nitrogen adsorption and a specific surface area of 100 to 400 m 2 /g as measured by the BET method with water vapor adsorption, said abrasive having a ratio of the specific surface area as measured by the BET method with water vapor absorption to the specific area as measured by the BET method with nitrogen adsorption of from 2 to 30.
Claim 3
Dependent Claim
16 words
The toothpaste composition as claimed in claim 1, wherein the pH is from 5 to 9.
Claim 4
Dependent Claim
44 words
The toothpaste composition as claimed in claim 1, wherein the abrasive has a pore volume of 0.01 to 0.15 mg/g as measured by the nitrogen adsorption method and a pore volume of 0.2 to 0.7 ml/g as measured by the water vapor adsorption method.
Claim 5
Dependent Claim
28 words
The toothpaste composition as claimed in claim 1, wherein the abrasive has a specific surface area of 5 to 60 m 2 /g as measured by CTAB method.
Claim 6
Dependent Claim
64 words
The toothpaste composition as claimed in claim 1, wherein the abrasive has a specific surface area of 5 to 60 m 2 /g as measured by the BET method with nitrogen adsorption and a specific surface area of 5 to 60 m 2 /g as measured by the CTAB method, with the difference between the two values being less than 40 m 2 /g.
Claim 7
Dependent Claim
38 words
The toothpaste composition as claimed in claim 1, wherein the silicate is aluminosilicate in which SiO 2 is combined with aluminium in an amount of less than 10% by weight based on the weight of SiO 2 .
Claim 8
Dependent Claim
30 words
The toothpaste composition as claimed in claim 1, which is made transparent by incorporating the abrasive into a transparent toothpaste vehicle having substantially the same refractive index as the abrasive.
Claim 9
Dependent Claim
19 words
The toothpaste composition as claimed in claim 7, wherein the abrasive has a refractive index of 1.420 to 1.450.
Claim 10
Dependent Claim
37 words
The toothpaste composition as claimed in claim 1, which comprises 1-50% abrasive; 0-5% binder; 10-80% humectant; 0.1-5% surface active agent; a 0.01-5% sweetener; and a 0.1-5% flavoring; said percentages being by weight of said total toothpaste composition.
Claim 11
Dependent Claim
41 words
The toothpaste composition as claimed in claim 1, which comprises 5-35% abrasive; a 0.1-5% binder; a 30-60% humectant; a 0.5-2% surface active agent; a 0.05-2% sweetener; and a 0.5-2% flavoring; said component percentages being by weight of said total toothpaste composition.
Claim 12
Dependent Claim
38 words
The toothpaste composition as claimed in claim 1, wherein the average particle diameter of the abrasive is 0.01 to 1 μm as measured by the SEM method and 1 to 30 μm as measured by the sedimentation method.
Claim 13
Dependent Claim
36 words
The toothpaste composition as claimed in claim 1, wherein the average particle diameter of the abrasive is 0.05 to 0.5 μm as measured by the SEM method and 1-15 μm as measured by the sedimentation method.
Claim 14
Dependent Claim
27 words
The toothpaste composition as claimed in claim 1, wherein the abrasiveness of the abrasive is 1 to 50 mg as measured by the copper plate abrasion method.
Claim 15
Dependent Claim
19 words
The toothpaste composition as claimed in claim 13, wherein the abrasiveness of the abrasive is 1 to 20 mg.
Claim 16
Dependent Claim
20 words
The toothpaste composition according to claim 1 wherein the abrasive contains more than 70% by weight of SiO 2 .
Claim 17
Dependent Claim
26 words
The toothpaste composition according to claim 6, wherein the amount of aluminum in the abrasive is less than 2% by weight based on SiO 2 .
Claim 18
Dependent Claim
27 words
The toothpaste composition according to claim 1, wherein the silicate is zirconiumsilicate having less than 10% zirconium by weight based on the weight of SiO 2 .
Claim 19
Dependent Claim
41 words
The toothpaste composition according to claim 1, wherein the abrasive contains less than 10% metal components based on the weight of SiO 2 , said metal components being selected from the group consisting of sodium, potassium, lithium, calcium, magnesium and hafnium.
Claim 20
Dependent Claim
36 words
The toothpaste composition according to claim 1, wherein the abrasive has a water content less than 20% by weight at 25° C. and 70% relative humidity and has a loss upon ignition of less than 15%.
Claim 21
Dependent Claim
16 words
The toothpaste composition according to claim 8, wherein the refractive index is from 1.430 to 1.445.
Claim 22
Dependent Claim
19 words
The toothpaste composition according to claim 1, wherein the abrasive has a liquid absorption of 0.4 to 2.0 ml/g.
Claim 23
Dependent Claim
63 words
The toothpaste composition according to claim 5, wherein the abrasive has a specific surface area of 10 to 50 m 2 /g as measured by the BET method with nitrogen adsorption and a specific surface area of 10 to 40 m 2 /g as measured by the CTAB method, with the difference between the two values being less than 30 m 2 /g.
Claim 24
Dependent Claim
52 words
The toothpaste composition according to claim 1, wherein the abrasive has a specific surface of 5 to 50 m 2 /g as measured by nitrogen adsorption and a specific surface area of 150 to 300 m 2 /g as measured by vapor adsorption, said ratio of said abrasive being 3 to 20.
Claim 25
Dependent Claim
39 words
The toothpaste composition according to claim 3, wherein the abrasive has a pore volume of 0.02 to 0.1 ml/g as measured by nitrogen absorption and a pore volume of 0.3 to 0.6 ml/g as measured by water vapor adsorption.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |