US4098878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothpaste containing milled alpha-alumina trihydrate
Assignee: Colgate Palmolive Co
•
Filing: 1975-10-23
•
Granted: 1978-07-04
•
Expires: 1995-10-23
Abstract
Abstract Dentifrices containing milled alpha-alumina trihydrate which has been surface-treated with a higher fatty acid.
Inventors
- 👤 Eric Baines
- 👤 Peter Platt
- 👤 Kenneth Tomlinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:30
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
Toothpaste comprising an aqueous vehicle and about 5 to 60% of dental abrasive particles of about 2 to 20 microns diameter individually dispersed therein, said particles comprising milled alpha-alumina trihydrate which has been surface-treated with about 0.1 to 2%, based on the weight of said milled trihydrate, of a hydrophobic long chain fatty carboxylic acid having 10 to 25 carbon atoms or a mixture of said acids, said toothpaste having a pH of about 5 to 9 and being in an unlined aluminum tube.
Claim 2
Dependent Claim
84 words
Toothpaste comprising an aqueous vehicle and about 5 to 60% of dental abrasive particles of about 2 to 20 microns diameter individually dispersed therein, said particles comprising milled alpha-alumina trihydrate which has been surface-treated with about 0.1 to 2%, based on the weight of said milled trihydrate, of a hydrophobic long chain fatty carboxylic acid having 10 to 25 carbon atoms or a mixture of said acids, said toothpaste having a pH of about 5 to 9 and being in an unlined aluminum tube.
Claim 3
Dependent Claim
14 words
Toothpaste as in claim 1 in which sodium fluoride is dispersed in said vehicle.
Claim 4
Dependent Claim
28 words
Toothpaste as in claim 1 in which the proportion of said acid is in the range of about 0.1 to 2% based on the weight of alpha-alumina trihydrate.
Claim 5
Dependent Claim
23 words
Toothpaste as in claim 1 in which said alpha-alumina trihydrate has been contacted with said acid before mixing said particles with said vehicle.
Claim 6
Dependent Claim
30 words
Toothpaste as in claim 1 in which said vehicle contains said acid or a mixture of said acids or an alkali metal salt of said acid or mixture of acids.
Claim 7
Dependent Claim
98 words
Toothpaste comprising an aqueous vehicle containing a hydrophobic long chain fatty carboxylic acid having 10 to 25 carbon atoms or a mixture of said acids or an alkali metal salt of said acid or mixture of acids and containing about 5 to 60% of dental abrasive particles comprising milled alpha-alumina trihydrate of about 2 to 20 microns diameter individually dispersed in said vehicle, the amount of said acid being about 0.1 to 2% based on the weight of said milled trihydrate, said toothpaste having a pH of about 5 to 9 and being in an unlined aluminum tube.
Claim 8
Dependent Claim
98 words
Toothpaste comprising an aqueous vehicle containing a hydrophobic long chain fatty carboxylic acid having 10 to 25 carbon atoms or a mixture of said acids or an alkali metal salt of said acid or mixture of acids and containing about 5 to 60% of dental abrasive particles comprising milled alpha-alumina trihydrate of about 2 to 20 microns diameter individually dispersed in said vehicle, the amount of said acid being about 0.1 to 2% based on the weight of said milled trihydrate, said toothpaste having a pH of about 5 to 9 and being in an unlined aluminum tube.
Claim 9
Dependent Claim
26 words
Toothpaste as in claim 6 in which said vehicle contains sodium stearate in amount of about 0.1 to 2% based on the weight of alpha-alumina trihydrate.
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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) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |