US4060599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrices
Assignee: Colgate Palmolive Co
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Filing: 1976-04-09
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Granted: 1977-11-29
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Expires: 1996-04-09
Abstract
Abstract Dentifrices containing ground crystals of alpha-alumina having a mean ultimate particle size of about 1 to 2 microns. Typically, the size is that essentially 100% are below 10 microns; about 95% are below 5 microns; about 85% are below 3 microns; about 75% are below 2 microns; about 25% are below 1 micron; and about 5% are below 0.5 microns.
Inventors
- 👤 Martin Cordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:12
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26; A61K8/02; A61K8/0241; A61K8/0245; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
41 words
A dentifrice comprising, as an abrasive, ground crystals of alpha-alumina, ground to its ultimate particle form and having a mean ultimate particle size of about 1 to 2 microns, the proportion of said alpha-alumina being above 0.1% and less than 60%.
Claim 2
Dependent Claim
41 words
A dentifrice comprising, as an abrasive, ground crystals of alpha-alumina, ground to its ultimate particle form and having a mean ultimate particle size of about 1 to 2 microns, the proportion of said alpha-alumina being above 0.1% and less than 60%.
Claim 3
Dependent Claim
17 words
A dentifrice as in claim 1 in which said mean ultimate particle size is about 1.6 microns.
Claim 4
Dependent Claim
30 words
A dentifrice as in claim 2 also containing a dental abrasive having a particle size of about 2 to 40 microns and a Mohs hardness of less than about 6.
Claim 5
Dependent Claim
46 words
A dentifrice as in claim 3 in which said Mohs hardness is about 2 to 5 and the proportion of said dental abrasive of said Mohs hardness is in the range of about 10 to 60%, the proportion of said alpha-alumina being about 50 to 15%.
Claim 6
Dependent Claim
28 words
A dentifrice as in claim 4 containing a sodium alumino-silicate in amount in the range of about 10to 60%, the proportion of said alpha-alumina being about 5to 15%.
Claim 7
Dependent Claim
15 words
A dentifrice as in claim 5 wherein the proportion of said alpha-alumina is about 10%.
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) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |