US3751568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating teeth with a durable glaze
Assignee: Eastman Dental Center Corp
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Filing: 1971-06-18
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Granted: 1973-08-07
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Expires: 1991-06-18
Abstract
Abstract YTTERBIUM CHLORIDE AND ACIDIFIED SOLUTIONS THEREOF ARE APPLIED TOPICALLY TO TEETH EITHER PRECEDING OR FOLLOWING THE TOPICAL APPLICATION OF TITANIUM TETRAFLUORIDE TO INCREASE THE RESISTANCE THEREOF TO DENTAL CARIES. THE ACIDIFIED SOLUTION OF YTTERBIUM CHLORIDE, CERTAIN ORGANIC ACIDS SUCH AS FORMIC ACID, ACETIC ACID AND THE LIKE AND THEIR SALTS, AND CERTAIN INORGANIC ACIDS, SUCH AS, HYDROCHLORIC ACID, FORM AN AESTHETICALLY PLEASING, DURABLE FLUORIDE GLAZE ON THE TOOTH SURFACE WHEN APPLIED TOPICALLY EITHER FOLLOWING OR PRECEDING THE TOPICAL APPLICATION OF TITANIUM TETRAFLUORIDE.
Inventors
- 👤 S Mundorff
- 👤 B Biddy
- 👤 B Shrestha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:39
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K6/00; A61K6/20; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/29; A61K8/30; A61K8/33; A61K8/36; A61K8/362; A61K8/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |