US4292306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice with topical and systemic phosphate fluoride system
Assignee: Individual
•
Filing: 1979-11-08
•
Granted: 1981-09-29
•
Expires: 1999-11-08
Abstract
Abstract A coated fluoride and a stannous fluoride containing dentrifice of a mixture containing sodium dihydrogen phosphate, calcium pyrophosphate, glycerin, sodium carboxymethycellulose, xylitol, distilled water and spearmint oil. The dentifrice is preferably in the form of a gel.
Inventors
- 👤 Frank R. Faunce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/24; A61K8/30; A61K8/33; A61K8/34; A61K8/345; A61K8/72; A61K8/73; A61K8/731; A61K2800/00; A61K2800/80; A61K2800/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A dentifrice composition for topical fluoride treatment of human teeth during oral hygiene, said dentifrice composition comprising: a quantity of stannous fluoride sufficient to develop a fluoride concentration of said composition from about 0.03% to about 0.05% by weight of said dentifrice composition; a sufficient quantity of sodium dihydrogen phosphate compound for pH adjustment to a pH range of about 3.5 and for developing an energized tooth surface for enhancement of said topical fluoride treatment, said stannous fluoride and said sodium dihydrogen phosphate providing a complex stannous fluoride fluorophosphate compound at the energized tooth surface during oral hygiene that develops a caries inhibiting fluorophosphate complex within the crystalline latticework of the tooth enamel; and a water-free gel carrier that inhibits deterioration of the stannous fluoride and the sodium dihydrogen phosphate compound prior to use in an aqueous environment.
Claim 2
Dependent Claim
138 words
A dentifrice composition for topical fluoride treatment of human teeth during oral hygiene, said dentifrice composition comprising: a quantity of stannous fluoride sufficient to develop a fluoride concentration of said composition from about 0.03% to about 0.05% by weight of said dentifrice composition; a sufficient quantity of sodium dihydrogen phosphate compound for pH adjustment to a pH range of about 3.5 and for developing an energized tooth surface for enhancement of said topical fluoride treatment, said stannous fluoride and said sodium dihydrogen phosphate providing a complex stannous fluoride fluorophosphate compound at the energized tooth surface during oral hygiene that develops a caries inhibiting fluorophosphate complex within the crystalline latticework of the tooth enamel; and a water-free gel carrier that inhibits deterioration of the stannous fluoride and the sodium dihydrogen phosphate compound prior to use in an aqueous environment.
References Cited (Backward Citations)
US1691504A
Cited
US2216816A
Cited
US3282792A
Cited
US3445567A
Cited
US3475533A
Cited
US3431339A
Cited
US3577521A
Cited
US3574824A
Cited
GB1222197A
Cited
US3689637A
Cited
US3919409A
Cited
GB1408922A
Cited
US3929987A
Cited
US3927202A
Cited
US4002732A
Cited
US3892843A
Cited
US4071615A
Cited
US4069311A
Cited
US4071614A
Cited
US4082841A
Cited
US4169885A
Cited
US4196189A
Cited
US4203966A
Cited
US4132771A
Cited
US4198394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |