US4342741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice compositions
Assignee: Sangi Co Ltd
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Filing: 1981-04-27
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Granted: 1982-08-03
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Expires: 2001-04-27
Abstract
Abstract A dentifrice composition containing synthetic hydroxyapatite powder preferably in an amount of from 5 to 60% by weight and being slightly or weakly acidic preferably having a pH of from 4 to 6.9. The dentifrice composition is very effective in eliminating plaque from tooth surfaces and also has a high fortifying and remineralizing effect on the tooth surfaces.
Inventors
- 👤 Hideki Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:35
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
A dentifrice composition for toothpaste having a pH of from 4 to 6.9 and consisting essentially of: 30 to 35 parts by weight of an abrading agent containing 5 to 25 parts by weight of synthetic hydroxyapatite powder and the balance of at least one member selected from the group consisting of calcium phosphate and calcium pyrophosphate; 20 to 35 parts by weight of at least one filler selected from the group consisting of glycerin and sorbitol; and 20 to 35 parts by weight of water.
Claim 2
Dependent Claim
86 words
A dentifrice composition for toothpaste having a pH of from 4 to 6.9 and consisting essentially of: 30 to 35 parts by weight of an abrading agent containing 5 to 25 parts by weight of synthetic hydroxyapatite powder and the balance of at least one member selected from the group consisting of calcium phosphate and calcium pyrophosphate; 20 to 35 parts by weight of at least one filler selected from the group consisting of glycerin and sorbitol; and 20 to 35 parts by weight of water.
Claim 3
Dependent Claim
30 words
A dentifrice composition as claimed in claim 1, wherein the synthetic hydroxyapatite powder has an average particle size of about 2μ and a maximum particle size of 10μ or less.
References Cited (Backward Citations)
US4048300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-02 | 1986-02-01 | 1986-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-02 | 1990-02-01 | 1990-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-02 | 1994-02-01 | 1994-08-03 | $7700.00 | Window Closed / Lapsed |