Patent US3937803A successfully refreshed from Google Patents.
US3937803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flavored dental creams
Assignee: Colgate Palmolive Co
•
Filing: 1974-04-30
•
Granted: 1976-02-10
•
Expires: 1994-04-30
Abstract
Abstract Toothpaste containing sodium bicarbonate as the principal abrasive together with essential oil flavoring agent in a thickened water-glycerol vehicle in which the water:glycerol ratio is in the range of about 0.4:1 to 0.7:1.
Inventors
- 👤 Thomas James Delaney
- 👤 William Grant Pierson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:47
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
137 words
A toothpaste containing about 20 to 60% of abrasive particles containing at least about 25% sodium bicarbonate in a vehicle containing sufficient liquids and including a water-glycerol mix, the water-glycerol ratio being in the range of about 0.4 to 0.7:1, said vehicle consisting essentially of about 5 to 35% water and said glycerol and a sufficient amount of gelling or thickening agent to impart to the dental cream the pasty consistency, body and non-tacky nature which is characteristic of conventional dental creams or toothpastes, said toothpaste containing a water-insoluble essential oil flavoring agent in the range of about 0.5 to 1.5%, said sodium bicarbonate being primarily in the undissolved solid state, said dental cream having a granular textured appearance comprising a substantially dispersed noncrystalline appearing granulate of macroscopic crystalline bicarbonate granules in an otherwise smooth continuous matrix.
Claim 2
Dependent Claim
137 words
A toothpaste containing about 20 to 60% of abrasive particles containing at least about 25% sodium bicarbonate in a vehicle containing sufficient liquids and including a water-glycerol mix, the water-glycerol ratio being in the range of about 0.4 to 0.7:1, said vehicle consisting essentially of about 5 to 35% water and said glycerol and a sufficient amount of gelling or thickening agent to impart to the dental cream the pasty consistency, body and non-tacky nature which is characteristic of conventional dental creams or toothpastes, said toothpaste containing a water-insoluble essential oil flavoring agent in the range of about 0.5 to 1.5%, said sodium bicarbonate being primarily in the undissolved solid state, said dental cream having a granular textured appearance comprising a substantially dispersed noncrystalline appearing granulate of macroscopic crystalline bicarbonate granules in an otherwise smooth continuous matrix.
Claim 3
Dependent Claim
12 words
Toothpaste as in claim 1 containing about 35 to 41% sodium bicarbonate.
Claim 4
Dependent Claim
19 words
Toothpaste as in claim 1 containing sodium bicarbonate of particle diameter principally above 150 microns but below 0.4 mm.
Claim 5
Dependent Claim
11 words
Toothpaste as in claim 3 containing sodium carboxymethylcellulose as gelling agent.
Claim 6
Dependent Claim
9 words
Toothpaste as in claim 1 containing a compatible surfactant.
Claim 7
Dependent Claim
20 words
Toothpaste as defined in claim 1 wherein said bicarbonate has a particle size largely below about 0.4 mm in diameter.
Claim 8
Dependent Claim
25 words
Toothpaste as defined in claim 1 wherein a major proportion by weight of said bicarbonate has a particle size above about 0.01 mm in diameter.
Claim 9
Dependent Claim
17 words
Toothpaste as defined in claim 1 additionally containing about 5 to 25% of a further abrasives ingredient.
Claim 10
Dependent Claim
14 words
Toothpaste as defined in claim 1 additionally containing less than about 25% calcium carbonate.
Claim 11
Dependent Claim
14 words
A toothpaste as defined in claim 1 wherein said vehicle contains a thickening agent.
Claim 12
Dependent Claim
28 words
Toothpaste as defined in claim 1 wherein sodium bicarbonate is generally monoclinic crystals, some of which have projecting spike-like portions of generally rhombohedral shape with many reentraut angles.
References Cited (Backward Citations)
US1082681A
Cited
US1112180A
Cited
US1716035A
Cited
US2024146A
Cited
US2128917A
Cited
FR1124756A
Cited
US3590120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |