US4263276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrices
Assignee: Colgate Palmolive Co
•
Filing: 1979-05-10
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Granted: 1981-04-21
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Expires: 1999-05-10
Abstract
Abstract A dentifrice containing a siliceous polishing agent and an alkali metal fluoride or monofluorophosphate, a dye and an additive which prevents or reduces color fading which additive is benzoic acid and/or phytic acid when alkali metal monofluorophosphate is present and which is benzoic acid when alkali metal fluoride is present.
Inventors
- 👤 Kenneth Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:29
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/24; A61K8/25; A61K8/26; A61K8/30; A61K8/33; A61K8/36; A61K8/368; A61K8/55; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
150 words
A visually clear dentifrice in a lined aluminum tube, said dentifrice comprising a dentifrice vehicle containing at least about 3% by weight of water, from 5% to 50% by weight of a siliceous polishing agent having am empirical SiO 2 content of at least 70%, a particle size in the range from 1 to 35 microns, a substantially amorphous X-ray structure and an index of refraction between 1.44 and 1.47; an aqueous liquid vehicle having a refractive index matching that of said siliceous polishing agent; a compound which provides fluorine in amount to provide from 0.01% to 1% by weight of a fluorine selected from alkali metal fluoride and alkali metal monofluorophosphate; from 0.0007% to 0.05% by weight of a water-soluble non-toxic red or yellow monoazo dye or blue triarylmethane dye; and from 0.05% to 5% by weight of benzoic acid as an additive which prevents or reduces color fading.
Claim 2
Dependent Claim
150 words
A visually clear dentifrice in a lined aluminum tube, said dentifrice comprising a dentifrice vehicle containing at least about 3% by weight of water, from 5% to 50% by weight of a siliceous polishing agent having am empirical SiO 2 content of at least 70%, a particle size in the range from 1 to 35 microns, a substantially amorphous X-ray structure and an index of refraction between 1.44 and 1.47; an aqueous liquid vehicle having a refractive index matching that of said siliceous polishing agent; a compound which provides fluorine in amount to provide from 0.01% to 1% by weight of a fluorine selected from alkali metal fluoride and alkali metal monofluorophosphate; from 0.0007% to 0.05% by weight of a water-soluble non-toxic red or yellow monoazo dye or blue triarylmethane dye; and from 0.05% to 5% by weight of benzoic acid as an additive which prevents or reduces color fading.
Claim 3
Dependent Claim
24 words
A dentifrice as claimed in claim 1 wherein the siliceous polishing agent has a particle size in the range from 2 to 20 microns.
Claim 4
Dependent Claim
26 words
A dentifrice as claimed in claim 1 wherein the polishing agent is sodium aluminosilicate which is present in amount in the range from 15% to 25%.
Claim 5
Dependent Claim
16 words
A dentifrice as claimed in claim 1 wherein the compound which provides fluorine is sodium monofluorophosphate.
Claim 6
Dependent Claim
18 words
A dentifrice as claimed in claim 1 wherein benzoic acid is present in amount from 0.1% to 0.4%.
Claim 7
Dependent Claim
15 words
A dentifrice as claimed in claim 1 wherein the compound which fluoride is sodium fluoride.
Claim 8
Dependent Claim
18 words
A dentifrice as claimed in claim 6 wherein benzoic acid is present in amount from 0.1% to 0.2%.
Claim 9
Dependent Claim
19 words
A dentifrice as claimed in claim 1 wherein the dye is a monoazo dye which dyes the dentifrice red.
Claim 10
Dependent Claim
19 words
A dentifrice as claimed in claim 1 wherein the dye is a monoazo dye which dyes said dentrifrice yellow.
Claim 11
Dependent Claim
23 words
A dentifrice as claimed in claim 1 wherein the dye is a mixture of amaranth and F, D and C Yellow No. 5.
Claim 12
Dependent Claim
19 words
A dentifrice as claimed in claim 1 wherein the dye is a triarylmethane dye which dyes the dentifrice blue.
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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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |