Patent US4007259A successfully refreshed from Google Patents.
US4007259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cream
Assignee: Colgate Palmolive Co
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Filing: 1975-04-25
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Granted: 1977-02-08
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Expires: 1995-04-25
Abstract
Abstract A dental cream or toothpaste having dispersed therein particles of a water-insoluble thermoplastic polymeric material that are (a) visible because of their size and contrasting appearance, (b) substantially insoluble in the toothpaste base and (c) impalpable in the mouth during brushing of the teeth. A speckled toothpaste having dispersed therein particles of a blend of water-insoluble thermoplastic material and pigment that (a) are visible because of their size and contrasting appearance, (b) are substantially insoluble in the toothpaste base, (c) are impalpable in the mouth during brushing of the teeth and (d) have below 5% pigment concentration and a ratio of thermoplastic material to pigment of at least 20:1. A toothpaste comprising a clear gel base having dispersed therein a dental polishing agent having substantially the same refractive index as the clear gel base and visible particles of water-in-soluble thermoplstic material contrasting with the gel base.
Inventors
- 👤 Armando Patino
- 👤 Bernardo Maldonado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:14
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/18; A61K8/30; A61K8/31; A61K8/315; A61K8/72; A61K8/81; A61K8/8105; A61K8/8111; A61Q; A61Q11/00; A61K2800/00; A61K2800/20; A61K2800/26; A61K2800/262; A61K2800/40; A61K2800/56
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
206 words
A white opaque clear or translucent aqueous dental cream toothpaste containing at least about 1 up to about 5% by weight chloroform and having dispersed therein 0.2 to 10% by weight of particles of 10 to 300 parts of a water insoluble unpreflavored polymeric thermoplastic low molecular weight polyolefin, per part of dental cream contrasting pigments, or lakes, which otherwise have a tendency to bleed into chloroform containing toothpaste, and that are visible and substantially insoluble in the toothpaste base, being substantially inert to said chloroform, and said particles comprising water and chloroform insoluble pigmented but unflavored plastic subparticles of a desired contrasting color that are visible against the contrasting dental cream background, said chloroform being blended into the dental cream after the particles are first dispersed therein, thereby imparting bleed-resistance of said color in said toothpaste base, said speckles of pigmented plastic particles thereby retaining their distinct and contrasting appearance for at least the normal shelve life of the product and the time it takes to be used by the consumer, without significant attack by the chloroform of the pigment in the pigmented visible particles which would otherwise result in leaching or bleeding of the pigment from the particles into the contrasting color toothpaste base.
Claim 2
Dependent Claim
206 words
A white opaque clear or translucent aqueous dental cream toothpaste containing at least about 1 up to about 5% by weight chloroform and having dispersed therein 0.2 to 10% by weight of particles of 10 to 300 parts of a water insoluble unpreflavored polymeric thermoplastic low molecular weight polyolefin, per part of dental cream contrasting pigments, or lakes, which otherwise have a tendency to bleed into chloroform containing toothpaste, and that are visible and substantially insoluble in the toothpaste base, being substantially inert to said chloroform, and said particles comprising water and chloroform insoluble pigmented but unflavored plastic subparticles of a desired contrasting color that are visible against the contrasting dental cream background, said chloroform being blended into the dental cream after the particles are first dispersed therein, thereby imparting bleed-resistance of said color in said toothpaste base, said speckles of pigmented plastic particles thereby retaining their distinct and contrasting appearance for at least the normal shelve life of the product and the time it takes to be used by the consumer, without significant attack by the chloroform of the pigment in the pigmented visible particles which would otherwise result in leaching or bleeding of the pigment from the particles into the contrasting color toothpaste base.
Claim 3
Dependent Claim
20 words
The toothpaste of claim 1 wherein the visible particles have a mean particle diameter between about 150 and 600 microns.
Claim 4
Dependent Claim
26 words
The toothpaste of either of claim 1 and 2 wherein the polymeric thermoplastic material has a molecular weight within the range of about 1,000 and 20,000.
Claim 5
Dependent Claim
20 words
The toothpaste of claim 3 wherein the polymeric thermoplastic material is polyethylene having a molecular weight between 1,000 and 5,000.
Claim 6
Dependent Claim
23 words
The toothpaste of any one of the preceding claims wherein the particles include from about 0.1 to 5 percent by weight of pigment.
Claim 7
Dependent Claim
21 words
The toothpaste of any one of the preceding claims containing from about 0.2 to 1.0 percent by weight of said particles.
Claim 8
Dependent Claim
11 words
The toothpaste of claim 1 including a visually clear toothpaste base.
Claim 9
Dependent Claim
26 words
The toothpaste of claim 7 wherein said visually clear toothpaste base includes particles of polishing agent having substantially the same refractive index as said toothpaste base.
Claim 10
Dependent Claim
24 words
The toothpaste of claim 1 wherein the hardness of the thermoplastic material measured as 0.1 mm penetration (100 grams/5sec/25° C.) is at least 1.
Claim 11
Dependent Claim
34 words
The toothpaste of claim 1 wherein the particles include up to 5 percent coloring material and when dispersed in chloroform at room temperature for 16 hours the particles do not significantly discolor the chloroform.
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) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |