Patent US2219079A successfully refreshed from Google Patents.
Patent US4837007A successfully refreshed from Google Patents.
US4837007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoridating oral cavity
Assignee: CPPD Inc C/O CT Corp SYSTEM 208 LASALLE STREET CHICAGO ILLINOIS A CORP OF
•
Filing: 1986-12-05
•
Granted: 1989-06-06
•
Expires: 2006-12-05
Abstract
Abstract The disclosure concerns an oral hygiene product which provides in the mouth a reservoir for the slow release of a therapeutic agent, such as fluoride ions. The product comprises two compositions which are mixed in the mouth or before introduction into the mouth. One composition comprises an aqueous suspension of particles which slowly release the therapeutic agent in salvia. The other composition comprises an aqueous solution of a cationic polymer.
Inventors
- 👤 Ralph M. Duckworth
- 👤 Andrew M. Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:49
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/72; A61K8/73; A61K8/731; A61K8/81; A61K8/8141; A61K8/8152; A61K8/8158; A61Q; A61Q11/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
A method of fluoridating oral fluids which comprises introducing into the oral cavity an oral hygiene product obtained by admixing a first composition and a second composition wherein said first composition comprises a suspension of particles in a medium in which the particles are substantially insoluble which slowly releases fluoride ions in saliva in the mouth for a time greater than about 2 hours, and said second composition comprises an aqueous solution of a cationic polymer, in which method the first and second compositions are admixed in the oral cavity or at the time of usage just prior to introduction into the oral cavity.
Claim 2
Independent Claim
104 words
A method of fluoridating oral fluids which comprises introducing into the oral cavity an oral hygiene product obtained by admixing a first composition and a second composition wherein said first composition comprises a suspension of particles in a medium in which the particles are substantially insoluble which slowly releases fluoride ions in saliva in the mouth for a time greater than about 2 hours, and said second composition comprises an aqueous solution of a cationic polymer, in which method the first and second compositions are admixed in the oral cavity or at the time of usage just prior to introduction into the oral cavity.
Claim 3
Dependent Claim
17 words
The method as claimed in claim 1 wherein the particles are particles of a divalent metal fluoride.
Claim 4
Dependent Claim
19 words
The method as claimed in claim 1 wherein the particles have a size of 0.01 μm to 5 μm.
Claim 5
Dependent Claim
15 words
The method as claimed in claim 2 wherein the particles are particles of magnesium fluoride.
Claim 6
Dependent Claim
20 words
The method as claimed in claim 1 wherein the cationic polymer has a cationic charge density of at least 0.0005.
Claim 7
Dependent Claim
28 words
The method as claimed in claim 1 wherein the concentration of the cationic polymer in the admixture of the first and second compositions is 3 to 600 ppm.
Claim 8
Dependent Claim
15 words
The method as claimed in claim 1 in the form of a mouthwash or dentifrice.
Claim 9
Dependent Claim
21 words
The method as claimed in claim 1 wherein one or both of the first and second composition comprises a flavouring agent.
References Cited (Backward Citations)
US3489686A
Cited
US3580853A
Cited
US4110083A
Cited
US4157387A
Cited
GB2021949A
Cited
US4428930A
Cited
GB2118835A
Cited
US4411889A
Cited
GB2126081A
Cited
JPS601116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |