US4348378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plaque disclosing dentifrice compositions with semi-solid microcapsules of dye
Assignee: Individual
•
Filing: 1980-10-07
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Granted: 1982-09-07
•
Expires: 2000-10-07
Abstract
Abstract This invention relates to novel plaque disclosing compositions for use in the self-evaluation and motivation of oral hygiene practices. Still, more particularly, the invention relates to incorporated water insoluble, water immiscible, pressure rupturable, dispersed, emulsed particles and capsules containing a plaque disclosing dye element in toothpaste compositions.
Inventors
- 👤 Carl M. Kosti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:05
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/30; A61K8/49; A61K8/4973; A61K8/498; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/42
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
71 words
A diagnostic plaque disclosing dentifrice composition for topical application to the teeth comprising a continuous water soluble phase, and a discontinuous water insoluble phase dispersed in said water soluble phase, said water insoluble phase comprising selectively rupturable dye elements, with a dental plaque disclosing substance dispersed in said rupturable dye elements, whereby said dental plaque disclosing substance may be topically applied to said teeth by rupturing said selectively rupturable dye elements.
Claim 2
Dependent Claim
71 words
A diagnostic plaque disclosing dentifrice composition for topical application to the teeth comprising a continuous water soluble phase, and a discontinuous water insoluble phase dispersed in said water soluble phase, said water insoluble phase comprising selectively rupturable dye elements, with a dental plaque disclosing substance dispersed in said rupturable dye elements, whereby said dental plaque disclosing substance may be topically applied to said teeth by rupturing said selectively rupturable dye elements.
Claim 3
Dependent Claim
32 words
The invention as defined in claim 1 wherein said selectively rupturable dye elements additionally comprise a water insoluble substance, said water insoluble substance having a high affinity for adsorption by dental plaque.
Claim 4
Dependent Claim
16 words
The invention as defined in claim 1 wherein said composition is formed as a homogeneous paste.
Claim 5
Dependent Claim
16 words
The invention as defined in claim 1 wherein said composition is formed as a homogeneous gel.
Claim 6
Dependent Claim
22 words
The invention as defined in claim 2 wherein said water insoluble substance is a semi-solid, said semi-solid microencapsulating said plaque disclosing substance.
Claim 7
Dependent Claim
21 words
The invention as defined in claim 1 wherein said water soluble phase forms at least two-thirds, by weight, of said composition.
Claim 8
Dependent Claim
37 words
The invention as defined in claim 1 wherein said water soluble phase comprises water and a member selected from the group consisting of flavorings, nonstaining colors, sweeteners, alcohols, abrasives, humectants, thickening and emulsifying agents, fluorides, and preservatives.
Claim 9
Dependent Claim
15 words
The invention as defined in claim 1 wherein said water insoluble substance is a lipid.
Claim 10
Dependent Claim
30 words
The invention as defined in claim 1 wherein said water insoluble substance is an alkane series hydrocarbon selected from the group consisting of mineral oil, petrolatum, white petrolatum, and paraffin.
Claim 11
Dependent Claim
34 words
The invention as defined in claim 1 wherein said water insoluble substance is a fixed oil selected from the group consisting of cottonseed oil, olive oil, and neutral esters of organic acid with glycerine.
Claim 12
Dependent Claim
39 words
The invention as defined in claim 1 wherein said water insoluble substance is a substance derived from plant origin selected from the group consisting of resins derived from plant origin, Canada balsam, Peruvian balsam, copal, mastic, rosin, and benzoin.
Claim 13
Dependent Claim
59 words
The invention as defined in claim 1 whrein said dental plaque disclosing substance is a member selected from the group consisting of FD & C Red No. 3, FD & C Yellow No. 5, FD & C Yellow No. 6, FD & C Green No. 3, FD & C Blue No. 1, and FD & C Blue No. 2.
Claim 14
Dependent Claim
107 words
A method for visualizing plaque formation in the oral cavity and for self evaluation and motivation of oral hygiene practices without excessively staining nondental portions of the oral cavity, comprising the steps of: (a) applying a portion of the composition of claim 1 to the teeth so that said rupturable elements are adsorbed by plaque formations; (b) brushing the composition on the teeth so as to rupture said rupturable elements and disclose said plaque formations with said plaque disclosing substance but without appreciably staining other parts of the oral cavity; and (c) further brushing the teeth so as to remove the plaque disclosed by said disclosing substance.
Claim 15
Dependent Claim
12 words
The invention as defined in claim 5 wherein said semi-solid comprises petrolatum.
Claim 16
Dependent Claim
45 words
The invention as defined in claim 1 wherein said water soluble phase comprises about 0.5 to 75% water, and said water soluble phase additionally comprises about 1 to 65% abrasives, about 0.05 to 5% thickners and emulsifiers, and about 0.05 to 5% surface active agents.
Claim 17
Dependent Claim
16 words
The invention as defined in claim 1 wherein said water soluble phase comprises a conventional toothpaste.
Claim 18
Dependent Claim
33 words
The invention as defined in claim 2 wherein said dental plaque disclosing substance is dispersed in said selectively rupturable dye elements by suspending said dental plaque disclosing substance in said water insoluble substance.
Claim 19
Dependent Claim
14 words
The invention as defined in claim 17 wherein said water insoluble substance comprises petrolatum.
Claim 20
Dependent Claim
20 words
The invention according to claim 1 wherein said selectively rupturable dye elements comprise droplets dispersed in said water soluble phase.
Claim 21
Dependent Claim
48 words
A process for making a plaque disclosing dentifrice composition, said composition comprising semi-solid capsules of dye, said process comprising the steps of: forming selectively rupturable dye elements by encapsulating a plaque disclosing dye in a water insoluble substance, and incorporating said selectively rupturable elements in a dentifrice composition.
Claim 22
Dependent Claim
48 words
A process for making a plaque disclosing dentifrice composition, said composition comprising semi-solid capsules of dye, said process comprising the steps of: forming selectively rupturable dye elements by encapsulating a plaque disclosing dye in a water insoluble substance, and incorporating said selectively rupturable elements in a dentifrice composition.
Claim 23
Dependent Claim
51 words
The process according to claim 20 wherein said forming step comprises the encapsulation of FD & C Red No. 3 dye in petrolatum by first suspending said dye in said petrolatum, and then running said suspension through a colloidal mill a sufficient number of times to insure homongeneity of said suspension.
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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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |