Patent US4663153A successfully refreshed from Google Patents.
US4663153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium bicarbonate-containing tooth powder
Assignee: Church and Dwight Co Inc
•
Filing: 1985-08-08
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Granted: 1987-05-05
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Expires: 2005-08-08
Abstract
Abstract A tooth powder comprising at least about 50% by weight of sodium bicarbonate particles, wherein said sodium bicarbonate particles have a median particle size in the range of about 74 to 210 microns, flavoring and sweeteners. Fluoridating agents and second abrasives may also be included in the tooth powder.
Inventors
- 👤 Anthony Winston
- 👤 Anthony Ansaldi
- 👤 Norman Usen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:08
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
A dentifrice composition comprising at least 50% by weight of sodium bicarbonate particles as a dental abrasive material, said sodium bicarbonate particles having a median particle size within the range of 74 to 210 microns; and from 0.1 to 2% by weight of a fluoridating agent, said dentifrice composition being in the form of a tooth powder.
Claim 2
Dependent Claim
57 words
A dentifrice composition comprising at least 50% by weight of sodium bicarbonate particles as a dental abrasive material, said sodium bicarbonate particles having a median particle size within the range of 74 to 210 microns; and from 0.1 to 2% by weight of a fluoridating agent, said dentifrice composition being in the form of a tooth powder.
Claim 3
Dependent Claim
27 words
The dentifrice composition of claim 1, further containing from 0.05% to 3.0% by weight of a flavoring agent, and 0.20 to 3.0% by weight of a sweetener.
Claim 4
Dependent Claim
25 words
The dentifrice composition of claim 1, wherein the median particle size of said sodium bicarbonate particles is within the range of 74 to 149 microns.
Claim 5
Dependent Claim
18 words
The dentifrice composition of claim 1, comprising between 75% and 98% by weight of the sodium bicarbonate abrasive.
Claim 6
Dependent Claim
24 words
The dentifrice composition of claim 4, wherein the sodium bicarbonate particles have a median particle size within the range of 74 to 149 microns.
Claim 7
Independent Claim
56 words
A method of cleaning the teeth and gums, comprising applying a tooth powder to said teeth and gums, said tooth powder comprising at least about 50% by weight of sodium bicarbonate particles having a median particle size within the range of 74 to 210 microns, and from 0.1 to 2% by weight of a fluoridating agent.
Claim 8
Independent Claim
56 words
A method of cleaning the teeth and gums, comprising applying a tooth powder to said teeth and gums, said tooth powder comprising at least about 50% by weight of sodium bicarbonate particles having a median particle size within the range of 74 to 210 microns, and from 0.1 to 2% by weight of a fluoridating agent.
Claim 9
Dependent Claim
28 words
The method of claim 6, wherein the tooth powder contains from 0.05 to 3.0% by weight of a flavoring agent, and from 0.20% to 3.0% of a sweetener.
Claim 10
Dependent Claim
28 words
The method of claim 6, wherein the median particle size of the sodium bicarbonate particles in the tooth powder is within the range of 74 to 149 microns.
Claim 11
Dependent Claim
21 words
The method of claim 6, wherein the sodium bicarbonate particles comprise from 75% to 98% by weight of the tooth powder.
Claim 12
Dependent Claim
40 words
The method of claim 6, wherein the sodium bicarbonate particles comprise from 75% to 98% by weight of the tooth powder, and the median particle size of the sodium bicarbonate particles is within the range of 74 to 149 microns.
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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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |