Patent US4976955A successfully refreshed from Google Patents.
US4976955A
Expired / Lapsed
US
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Oral hygiene composition
Assignee: BML Pharmaceuticals Inc
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Filing: 1990-03-12
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Granted: 1990-12-11
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Expires: 2010-03-12
Abstract
Abstract An oral hygiene composition that when brushed on or otherwise applied to the surface of teeth and adjacent gum tissue acts not only to bleach the teeth but also to improve the condition of the gums. The composition includes both magnesium peroxide and magnesium hydroxide, the magnesium peroxide, when activated, being capable of releasing active oxygen to effect a bleaching action removing stains from the teeth surfaces and to whiten and brighten them, and at the same time to oxidize and destroy anerobic bacteria associated with dental plaque. The magnesium hydroxide renders the pH of the magnesium peroxide alkaline, whereby the composition, when stored in a toothpaste tube or other sealed container remains inactive, and is activated only when the composition is applied orally and rendered acidic in the mouth by saliva.
Inventors
- 👤 Barry M. Libin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:56
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
140 words
A normally inactive and storable wet aqueous alkaline cream or paste oral hygiene composition which when the composition is applied to the surface of the teeth and adjacent gingival tissue, it then interacts with saliva in the mouth and is rendered active, said composition consisting essentially of from 0.5% to 40% by weight of de-ionized water, in an amount effective to confer wetness to the cream or paste containing: (a) magnesium peroxide; and (b) magnesium hydroxide in an amount relative to the magnesium peroxide sufficient to impart alkalinity to the composition to render it inactive and storable, said composition when applied then interacting with said saliva which imparts acidity thereto, thereby activating the composition, and causing the magnesium peroxide to release active oxygen to effect whitening of the teeth surfaces and acting to destroy anerobic bacteria associated with dental plaque.
Claim 2
Dependent Claim
140 words
A normally inactive and storable wet aqueous alkaline cream or paste oral hygiene composition which when the composition is applied to the surface of the teeth and adjacent gingival tissue, it then interacts with saliva in the mouth and is rendered active, said composition consisting essentially of from 0.5% to 40% by weight of de-ionized water, in an amount effective to confer wetness to the cream or paste containing: (a) magnesium peroxide; and (b) magnesium hydroxide in an amount relative to the magnesium peroxide sufficient to impart alkalinity to the composition to render it inactive and storable, said composition when applied then interacting with said saliva which imparts acidity thereto, thereby activating the composition, and causing the magnesium peroxide to release active oxygen to effect whitening of the teeth surfaces and acting to destroy anerobic bacteria associated with dental plaque.
Claim 3
Dependent Claim
27 words
A composition as set forth in claim 1, wherein the amount of magnesium hydroxide is such as to produce alkalinity with a pH in excess of 8.
Claim 4
Dependent Claim
20 words
A composition as set forth in claim 2, wherein said pH lies in a range of about 9.5 to 11.0.
Claim 5
Dependent Claim
23 words
A composition as set forth in claim 1, further including a thickening agent and a gelling agent in an amount producing a toothpaste.
Claim 6
Dependent Claim
16 words
A composition as set forth in claim 4, wherein said thickening agent is sodium carboxymethyl cellulose.
Claim 7
Dependent Claim
14 words
A composition as set forth in claim 4, wherein said gelling agent is glycerine.
Claim 8
Dependent Claim
21 words
A composition as set forth in claim 1, further including sorbitol functioning as a humectant to retain moisture in the composition.
Claim 9
Dependent Claim
19 words
A composition as set forth in claim 1, further including sodium lauryl sulfate as a detergent and foaming agent.
Claim 10
Dependent Claim
24 words
A composition as set forth in claim 1 in which the composition is in extrudable paste form and is stored in a toothpaste tube.
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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) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |