US3378445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prophylactic dental paste compositions comprising zirconium silicate and tin dioxide
Assignee: Indiana University Foundation Inc
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Filing: 1966-06-17
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Granted: 1968-04-16
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Expires: 1986-06-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Muhler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/28; A61Q; A61Q11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A DENTAL PROPHYLAXIS COMPOSITION FOR CLEANING AND POLISHING TEETH COMPRISING AS A CLEANING AND POLISHING COMPONENT A MIXTURE OF UNCOATED ZIRCONIUM SILICATE, ZRSIO4, AND UNCOATED TIN DIOXIDE, SNO2, WHEREIN THE ZIRCONIUM SILICATE, ZRSIO4, HAS A DISTRIBUTION OF MEAN DIAMETER PARTICLE SIZES IN THE RANGE OF UP TO ABOUT 75 MICRONS AND THE TIN DIOXIDE, SNO2, HAS A DISTRIBUTION OF MEAN DIAMETER PARTICLE SIZES IN THE RANGE OF UP TO ABOUT 3 MICRONS AND WHEREIN THE ZIRCONIUM SILICATE, ZRSIO4, IS PROVIDED IN SAID MIXTURE AT A LEVEL OF AT LEAST ABOUT 50 AND UP TO ABOUT 99%, BY WEIGHT OF SAID MIXTURE, THE BALANCE OF SAID MIXTURE BEING TIN DIOXIDE, SNO2.
Claim 2
Dependent Claim
110 words
A DENTAL PROPHYLAXIS COMPOSITION FOR CLEANING AND POLISHING TEETH COMPRISING AS A CLEANING AND POLISHING COMPONENT A MIXTURE OF UNCOATED ZIRCONIUM SILICATE, ZRSIO4, AND UNCOATED TIN DIOXIDE, SNO2, WHEREIN THE ZIRCONIUM SILICATE, ZRSIO4, HAS A DISTRIBUTION OF MEAN DIAMETER PARTICLE SIZES IN THE RANGE OF UP TO ABOUT 75 MICRONS AND THE TIN DIOXIDE, SNO2, HAS A DISTRIBUTION OF MEAN DIAMETER PARTICLE SIZES IN THE RANGE OF UP TO ABOUT 3 MICRONS AND WHEREIN THE ZIRCONIUM SILICATE, ZRSIO4, IS PROVIDED IN SAID MIXTURE AT A LEVEL OF AT LEAST ABOUT 50 AND UP TO ABOUT 99%, BY WEIGHT OF SAID MIXTURE, THE BALANCE OF SAID MIXTURE BEING TIN DIOXIDE, SNO2.
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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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |