US4812308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen peroxide-releasing tooth powder
Assignee: Church and Dwight Co Inc
•
Filing: 1987-02-20
•
Granted: 1989-03-14
•
Expires: 2007-02-20
Abstract
Abstract A stable, palatable and safe hydrogen peroxide releasing tooth powder composition containing sodium bicarbonate and sodium percarbonate in combination with flavoring agents, sweeteners, fluoridating agents, additional abrasives, surfactants and/or additional adjuvants.
Inventors
- 👤 Anthony Winston
- 👤 Herman Marder
- 👤 Wayne Sorenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:45
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/18; A61K8/19; A61K8/22; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
44 words
A tooth powder, comprising at least 40% by weight of a mixture of sodium bicarbonate and sodium percarbonate, the percarbonate being present in an amount sufficient to release from 0.5 to 5% hydrogen peroxide by weight of the tooth powder, upon contact with water.
Claim 2
Dependent Claim
44 words
A tooth powder, comprising at least 40% by weight of a mixture of sodium bicarbonate and sodium percarbonate, the percarbonate being present in an amount sufficient to release from 0.5 to 5% hydrogen peroxide by weight of the tooth powder, upon contact with water.
Claim 3
Dependent Claim
40 words
The tooth powder of claim 1, wherein the sodium bicarbonate is incorporated in an amount of from 50 to 98% of the tooth powder, in the form of particles having a median particle size within the range of 74-210 microns.
Claim 4
Dependent Claim
26 words
The tooth powder of claim 1, wherein the sodium percarbonate is present in an amount of from 1 to 12% by weight of the tooth powder.
Claim 5
Dependent Claim
18 words
The tooth powder of claim 1, further comprising from 0.2 to 2% by weight of a fluoridating agent.
Claim 6
Dependent Claim
15 words
The tooth powder of claim 1, further comprising from 0.1 to 5% of a sweetener.
Claim 7
Dependent Claim
18 words
The tooth powder of claim 1, further comprising from 0.2 to 3.0% by weight of a flavoring agent.
Claim 8
Dependent Claim
18 words
The tooth powder of claim 1, further comprising from 1 to 50% by weight of a secondary abrasive.
Claim 9
Dependent Claim
17 words
The tooth powder of claim 1, further comprising up to 1% by weight of a flow aid.
Claim 10
Dependent Claim
42 words
The tooth powder of claim 1, comprising: ______________________________________
sodium bicarbonate
48 to 98%
sodium percarbonate
1 to 12%
fluoridating agent
0.2 to 2%
flavoring agent 0.2 to 3%
sweetener 0.1 to 5
secondary abrasive
0 to 50%
surfactant 0 to 3%
______________________________________
Claim 11
Dependent Claim
33 words
The tooth powder of claim 1, comprising: ______________________________________
sodium bicarbonate
89 to 94%
sodium percarbonate
4 to 6%
flavoring agent 1 to 2%
sweetener 1 to 2%
flow aid 0 to 1%
______________________________________
Claim 12
Independent Claim
62 words
A method of cleaning the teeth and gums, comprising applying a tooth powder to the teeth and gums, said tooth powder comprising at least 40% by weight of a mixture of sodium bicarbonate and sodium percarbonate, the percarbonate being present in an amount sufficient to release from 0.5 to 5% hydrogen peroxide by weight of the tooth powder, upon contact with water.
Claim 13
Independent Claim
62 words
A method of cleaning the teeth and gums, comprising applying a tooth powder to the teeth and gums, said tooth powder comprising at least 40% by weight of a mixture of sodium bicarbonate and sodium percarbonate, the percarbonate being present in an amount sufficient to release from 0.5 to 5% hydrogen peroxide by weight of the tooth powder, upon contact with water.
Claim 14
Dependent Claim
41 words
The method of claim 9, wherein the sodium bicarbonate is incorporated in an amount of from 50 to 98% of the tooth powder, in the form of particles having a median particle size within the range of 74 to 210 microns.
Claim 15
Dependent Claim
25 words
The method of claim 9, wherein the sodium percarbonate is present in an amount of from 1 to 12% by weight of the tooth powder.
Claim 16
Dependent Claim
21 words
The method of claim 9, wherein the tooth powder further comprises from 0.2 to 2% by weight of a fluoridating agent.
Claim 17
Dependent Claim
18 words
The method of claim 9, wherein the tooth powder further comprises from 0.1 to 5% of a sweetener.
Claim 18
Dependent Claim
21 words
The method of claim 9, wherein the tooth powder further comprises from 0.20 to 3.0% by weight of a flavoring agent.
Claim 19
Dependent Claim
21 words
The method of claim 9, wherein the tooth powder further comprises from 1 to 50% by weight of a secondary abrasive.
Claim 20
Dependent Claim
21 words
The method of claim 9, wherein the tooth powder further comprises from 0.1 to 0.2% by weight of a flow aid.
Claim 21
Dependent Claim
45 words
The method of claim 9, wherein the tooth powder comprises: ______________________________________
sodium bicarbonate
48 to 98%
sodium percarbonate
1 to 12%
fluoridating agent
0.2 to 2%
flavoring agent 0.2 to 3%
sweetener 0.1 to 5%
secondary abrasive
0 to 50%
surfactant 0 to 3%
______________________________________
Claim 22
Dependent Claim
36 words
The method of claim 9, wherein the tooth powder comprises: ______________________________________
sodium bicarbonate
89 to 94%
sodium percarbonate
4 to 6%
flavoring agent 1 to 2%
sweetener 1 to 2%
flow aid 0 to 1%
______________________________________
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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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |