US4282204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-caries preparations
Assignee: Nicholas Pty Ltd
•
Filing: 1979-05-30
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Granted: 1981-08-04
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Expires: 1999-05-30
Abstract
Abstract Cationic polysaccharides, preferably quaternary ammonium galactomannans, are used, for example in dentifrices, mouthwashes and ointments, to inhibit dental caries by binding oral bacteria.
Inventors
- 👤 Glyn O. Phillips
- 👤 Alan N. Hall
- 👤 Stephen D. Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:58
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61K8/737; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/54; A61K2800/542; A61K2800/5426
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
71 words
A method of inhibiting dental caries which comprises: administering to teeth a non-toxic polysaccharide selected from the group consisting of DEAE-cellulose, the quaternary ammonium derivative of guar gum having the repeating unit of the formula (1) ##STR7## wherein Q represents a quaternary ammonium group, and cationic maize starch having a degree of substitution of 0.034-0.042 ##STR8## in a dental caries inhibiting amount of at least 0.1 percent w/v of mouth liquids.
Claim 2
Independent Claim
71 words
A method of inhibiting dental caries which comprises: administering to teeth a non-toxic polysaccharide selected from the group consisting of DEAE-cellulose, the quaternary ammonium derivative of guar gum having the repeating unit of the formula (1) ##STR7## wherein Q represents a quaternary ammonium group, and cationic maize starch having a degree of substitution of 0.034-0.042 ##STR8## in a dental caries inhibiting amount of at least 0.1 percent w/v of mouth liquids.
Claim 3
Dependent Claim
13 words
The method according to claim 1, wherein the non-toxic cationic polysaccharide is DEAE-cellulose.
Claim 4
Dependent Claim
26 words
The method according to claim 1, wherein the non-toxic cationic polysaccharide the quaternary ammonium derivative of guar gum having the repeating unit of the formula (1).
Claim 5
Dependent Claim
21 words
The method according to claim 1, wherein the non-toxic cationic polysaccharide cationic maize starch having a degree of substitution of 0.034-0.042.
References Cited (Backward Citations)
US2931753A
Cited
US3303184A
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US3467647A
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US3505310A
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FR2036453A5
Cited
US3679792A
Cited
US4053638A
Cited
US3928316A
Cited
US4031307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |