US5300290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric particles for dental applications
Assignee: Gillette Canada Inc
•
Filing: 1993-02-08
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Granted: 1994-04-05
•
Expires: 2013-02-08
Abstract
Abstract An anti-microbial composition includes particles having an outer surface onto which an anti-microbial agent has been adsorbed. The particles can be used, for example, for coating the bristles of toothbrushes.
Inventors
- 👤 Jean L. Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:56
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/18; A61K8/30; A61K8/40; A61K8/43; A61K8/72; A61K8/81; A61K8/8105; A61K8/8117; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/56
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
59 words
An anti-microbial composition for oral hygiene, comprising a toothpaste or a mouthwash including solid particles having an ionically charged outer surface onto which an anti-microbial agent having an ionic charge that is the opposite of the ionic charge of said outer surface has been adsorbed, wherein said anti-microbial agent is present in said composition only on said outer surface.
Claim 2
Dependent Claim
59 words
An anti-microbial composition for oral hygiene, comprising a toothpaste or a mouthwash including solid particles having an ionically charged outer surface onto which an anti-microbial agent having an ionic charge that is the opposite of the ionic charge of said outer surface has been adsorbed, wherein said anti-microbial agent is present in said composition only on said outer surface.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein said anti-microbial agent comprises chlorhexidine.
Claim 4
Dependent Claim
10 words
The composition of claim 2 wherein said particles comprise polystyrene.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein said particles are between 0.01μ and 10μ in diameter.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein said particles are between 0.05μ and 1μ in diameter.
Claim 7
Dependent Claim
13 words
The composition of claim 1 wherein said outer surface is negatively charged layer.
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein said particles comprise organic polymers.
Claim 9
Dependent Claim
7 words
Toothpaste comprising the composition of claim 1.
Claim 10
Dependent Claim
12 words
The composition of claim 1 wherein said composition comprises an oral rinse.
Claim 11
Dependent Claim
47 words
An anti-microbial composition for oral hygiene, comprising a toothpaste or a mouthwash including water insoluble polymeric microspheres having an ionically charged outer surfaces on which an anti-microbial agent having an ionic charge that is the opposite of the ionic charge of said outer surface has been adsorbed.
Claim 12
Dependent Claim
47 words
An anti-microbial composition for oral hygiene, comprising a toothpaste or a mouthwash including water insoluble polymeric microspheres having an ionically charged outer surfaces on which an anti-microbial agent having an ionic charge that is the opposite of the ionic charge of said outer surface has been adsorbed.
Claim 13
Dependent Claim
12 words
The anti-microbial composition of claim 10 wherein said anti-microbial agent comprises chlorhexidine.
Claim 14
Dependent Claim
11 words
The anti-microbial composition of claim 10 wherein said microspheres comprises polystyrene.
Claim 15
Dependent Claim
13 words
The anti-microbial composition of claim 10, wherein said outer surface is negatively charged.
Claim 16
Dependent Claim
17 words
The anti-microbial composition of claim 10 wherein said microspheres have a diameter of between 0.01μ and 10μ.
Claim 17
Dependent Claim
12 words
The composition of claim 1 wherein said composition comprises an oral rinse.
Claim 18
Dependent Claim
11 words
The composition of claim 10 wherein said composition comprises a toothpaste.
Claim 19
Independent Claim
73 words
A method of inhibiting bacteria in the mouth comprising adsorbing an ionically charged anti-microbial agent onto only the outer surface of a polymeric particle, said outer surface having the opposite ionic charge of said anti-microbial agent; incorporating said polymeric particle with said anti-microbial agent adsorbed onto its outer surface into a toothpaste or a mouthwash; and placing said toothpaste or mouthwash into the mouth of a person to inhibit bacteria in said mouth.
Claim 20
Independent Claim
73 words
A method of inhibiting bacteria in the mouth comprising adsorbing an ionically charged anti-microbial agent onto only the outer surface of a polymeric particle, said outer surface having the opposite ionic charge of said anti-microbial agent; incorporating said polymeric particle with said anti-microbial agent adsorbed onto its outer surface into a toothpaste or a mouthwash; and placing said toothpaste or mouthwash into the mouth of a person to inhibit bacteria in said mouth.
Claim 21
Dependent Claim
11 words
The method of claim 17 wherein said anti-microbial agent is chlorhexidine.
Claim 22
Dependent Claim
11 words
The method of claim 17 wherein said particles are polystyrene microspheres.
Claim 23
Dependent Claim
15 words
The method of claim 17 wherein said polymeric particle is incorporated into an oral rinse.
Claim 24
Dependent Claim
14 words
The method of claim 17 wherein said polymeric particle is incorporated into a toothpaste.
References Cited (Backward Citations)
US2558992A
Cited
US3325368A
Cited
US3258805A
Cited
US3934001A
Cited
US3978206A
Cited
US3542519A
Cited
US3959457A
Cited
US3810479A
Cited
US3957964A
Cited
US4102992A
Cited
US3956480A
Cited
US4138383A
Cited
US4155870A
Cited
US4259103A
Cited
US4324630A
Cited
US4348378A
Cited
US4339429A
Cited
EP0079400A1
Cited
US4433959A
Cited
US5037818A
Cited
US4761417A
Cited
US4670185A
Cited
US4502497A
Cited
US4516571A
Cited
US4892736A
Cited
US5036006A
Cited
US4585652A
Cited
US4822339A
Cited
US4621120A
Cited
US5154932A
Cited
US4837007A
Cited
US4904479A
Cited
US5238749A
Cited
EP0244118A1
Cited
US4780320A
Cited
US4919939A
Cited
US4941989A
Cited
US4797234A
Cited
US4802255A
Cited
US4959220A
Cited
US5019723A
Cited
US4871352A
Cited
US5240710A
Cited
US4917892A
Cited
US4978392A
Cited
WO1990010400A1
Cited
US4980150A
Cited
US5064613A
Cited
US5185155A
Cited
US5211939A
Cited
US5250288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |