Patent US3978205A successfully refreshed from Google Patents.
US3978205A
Expired / Lapsed
US
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Dentifrice including luster imparting agent
Assignee: CPPD Inc A CORP OF
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Filing: 1974-03-29
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Granted: 1976-08-31
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Expires: 1994-03-29
Abstract
Abstract Dentifrices containing an abrasive cleaning agent and a luster agent impart an enhanced luster to the teeth through the use as luster agent of fumed silica obtained by vaporizing and recondensing silica.
Inventors
- 👤 Peter John Newman
- 👤 Charles Andrew Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:55
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25; A61K8/02; A61Q; A61Q11/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
75 words
A toothpaste composition comprising in said toothpaste, by weight, from 5 to about 60 percent of an abrasive cleaning agent having an average particle size of about 5 to about 25 microns, and 0.1 to about 40 percent of a finely divided lustre agent, said lustre agent consisting of substantially dehydroxylated fumed silica, having been vapourized and recondensed in the form of spherical particles of a size of from about 10 to about 100 millimicrons.
Claim 2
Dependent Claim
75 words
A toothpaste composition comprising in said toothpaste, by weight, from 5 to about 60 percent of an abrasive cleaning agent having an average particle size of about 5 to about 25 microns, and 0.1 to about 40 percent of a finely divided lustre agent, said lustre agent consisting of substantially dehydroxylated fumed silica, having been vapourized and recondensed in the form of spherical particles of a size of from about 10 to about 100 millimicrons.
Claim 3
Dependent Claim
30 words
A method of cleaning and imparting a lustre to teeth which comprises brushing said teeth with a sufficient amount, to impart said lustre, of the toothpaste composition of claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |