US4623536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium bicarbonate containing toothpaste
Assignee: Church and Dwight Co Inc
•
Filing: 1985-06-13
•
Granted: 1986-11-18
•
Expires: 2005-06-13
Abstract
Abstract A toothpaste containing at least 60% sodium bicarbonate particles as the sole abrasive, at least 30% of the sodium bicarbonate having particle sizes of less than 25 microns. Humectants, thickening agents, fluoridating agents, flavors, sweeteners and other conventional adjuvants may also be included in the toothpaste.
Inventors
- 👤 Anthony E. Winston
- 👤 Raymond Brown
- 👤 Norman Usen
- 👤 Anthony Ansaldi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:13
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
In a toothpaste containing an abrasive, a humectant and a thickening agent, the improvement comprising sodium bicarbonate as the sole abrasive, the sodium bicarbonate being incorporated in the toothpaste in an amount of at least 60% by weight, and at least 30% by weight of the sodium bicarbonate having a particle size of less than 25 microns.
Claim 2
Dependent Claim
57 words
In a toothpaste containing an abrasive, a humectant and a thickening agent, the improvement comprising sodium bicarbonate as the sole abrasive, the sodium bicarbonate being incorporated in the toothpaste in an amount of at least 60% by weight, and at least 30% by weight of the sodium bicarbonate having a particle size of less than 25 microns.
Claim 3
Dependent Claim
23 words
The toothpaste according to claim 1, wherein the humectant is selected from the group consisting of glycerol, propylene glycol, sorbitol and polyethylene glycols.
Claim 4
Dependent Claim
35 words
The toothpaste according to claim 1, wherein the thickening agent is selected from the group consisting of sodium carboxymethylcellulose, xanthan gum, methyl cellulose, hydroxyethyl cellulose, carrageen, gum karaya, gum tragacanth, gum arabic, and sodium alginate.
Claim 5
Dependent Claim
10 words
The toothpaste according to claim 1 further comprising a surfactant.
Claim 6
Dependent Claim
18 words
The toothpaste according to claim 1, further comprising from 0.3 to 5.0% by weight of a flavoring agent.
Claim 7
Dependent Claim
18 words
The toothpaste according to claim 1, further comprising from 0.3 to 5.0% by weight of a non-humectant sweetener.
Claim 8
Dependent Claim
77 words
A sodium bicarbonate based toothpaste comprising from 60 to 75% by weight sodium bicarbonate, at least 30% of said sodium bicarbonate having a particle size of less than 25 microns; from 5 to 25% by weight of a humectant; from 0.3 to 3.0% by weight of a thickener; from 0.3 to 5.0% by weight of a surfactant; from 0.3 to 5.0% by weight of a flavoring agent; and from 0.3 to 5.0% by weight of a sweetener.
Claim 9
Dependent Claim
77 words
A sodium bicarbonate based toothpaste comprising from 60 to 75% by weight sodium bicarbonate, at least 30% of said sodium bicarbonate having a particle size of less than 25 microns; from 5 to 25% by weight of a humectant; from 0.3 to 3.0% by weight of a thickener; from 0.3 to 5.0% by weight of a surfactant; from 0.3 to 5.0% by weight of a flavoring agent; and from 0.3 to 5.0% by weight of a sweetener.
Claim 10
Dependent Claim
43 words
The toothpaste of claim 8, wherein from 25% to 100% of the sodium bicarbonate has a particle size of from 5 to 25 microns, and from 60 to 100% of the sodium bicarbonate has a particle size of from 25 to 210 microns.
Claim 11
Dependent Claim
22 words
The toothpaste of claim 7, wherein the humectant is selected from the group consisting of glycerol, propylene glycol, sorbitol, and polyethylene glycols.
Claim 12
Dependent Claim
33 words
The toothpaste of claim 7, wherein the thickener is selected from the group consisting of sodium carboxymethylcellulose, xanthan gum, methyl cellulose, hydroxyethyl cellulose, carrageen, gum karaya, gum tragacanth, gum arabic, and sodium alginate.
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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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |