US3151027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive for dentifrice composition
Assignee: Procter and Gamble Co
•
Filing: 1961-06-07
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Granted: 1964-09-29
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Expires: 1981-06-07
Abstract
No abstract record available.
Inventors
- 👤 William E Cooley
- 👤 Robert J Grabenstetter
- 👤 Robert W Broge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:38
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/19; A61K8/25; A61K8/26; A61K8/72; A61K8/84; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A DENIFRICE, EFFECTIVE IN REMOVING DENTAL PLAQUE FILMS, COMPRISING, AS ITS ESSENTIAL CLEANING AGENT, AN INORGANIC MINERAL SUBSTANCE, HAVING A HARDNESS ON MOHS'' SCALE GREATER THAN 2, IN THE FORM OF PARTICLES HAVING A MEAN DIAMETER IN THE RANGE OF ABOUT 1 MICRON TO ABOUT 15 MICRONS AND BEING COATED WITH A SUBSTANTIALLY WATER-IMPERVIOUS, CROSS-LINKED, THERMO-SETTING, HIGHLY POLYMERIZED SYNTHEIC RESIN, SAID RESIN HAVING BEEN HEAT CURED TO A HARDNESS EQUIVALENT TO A DENTIN ABRASION RATION OF NOT LESS THAN ABOUT 0.2, SAID CLEANING AGENT CONSISTING OF ABOUT 30% TO ABOUT 90% BY VOLUME OF SAID MINERAL SUBSTANCE AND ABOUT 70% TO ABOUT 10% BY VOLUME OF SAID SYNTHEIC RESIN, THE AVERAGE COATING COMPLETENESS OF SAID PARTICLES OF MINERAL SUBSTANCE BEING NOT LESS THAN ABOUT 50%, THE SAID RESIN-COATED PARTICLES HAVING A MEAN DIAMETER IN THE RANGE OF ABOUT 2 MICRONS TO ABOUT 20 MICRONS AND HAVING A CLEANING GRADE OF NOT LESS THAN ABOUT 4.
Claim 2
Dependent Claim
155 words
A DENIFRICE, EFFECTIVE IN REMOVING DENTAL PLAQUE FILMS, COMPRISING, AS ITS ESSENTIAL CLEANING AGENT, AN INORGANIC MINERAL SUBSTANCE, HAVING A HARDNESS ON MOHS'' SCALE GREATER THAN 2, IN THE FORM OF PARTICLES HAVING A MEAN DIAMETER IN THE RANGE OF ABOUT 1 MICRON TO ABOUT 15 MICRONS AND BEING COATED WITH A SUBSTANTIALLY WATER-IMPERVIOUS, CROSS-LINKED, THERMO-SETTING, HIGHLY POLYMERIZED SYNTHEIC RESIN, SAID RESIN HAVING BEEN HEAT CURED TO A HARDNESS EQUIVALENT TO A DENTIN ABRASION RATION OF NOT LESS THAN ABOUT 0.2, SAID CLEANING AGENT CONSISTING OF ABOUT 30% TO ABOUT 90% BY VOLUME OF SAID MINERAL SUBSTANCE AND ABOUT 70% TO ABOUT 10% BY VOLUME OF SAID SYNTHEIC RESIN, THE AVERAGE COATING COMPLETENESS OF SAID PARTICLES OF MINERAL SUBSTANCE BEING NOT LESS THAN ABOUT 50%, THE SAID RESIN-COATED PARTICLES HAVING A MEAN DIAMETER IN THE RANGE OF ABOUT 2 MICRONS TO ABOUT 20 MICRONS AND HAVING A CLEANING GRADE OF NOT LESS THAN ABOUT 4.
References Cited (Backward Citations)
US2130034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |