Patent US3475533A successfully refreshed from Google Patents.
US3475533A
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Water-free toothpastes containing metaphosphates,calcium carbonate,and mineral oil
Assignee: Extar Co
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Filing: 1966-05-19
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Granted: 1969-10-28
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Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Louis Philip Mayrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:35
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61K8/25
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A SUBSTANTIALLY WATER-FREE TOOTHPASTE COMPRISING BY WEIGHT, (A) FROM ABOUT 0.5 TO ABOUT 10 PARTS OF A WATER-SOLUBLE MONOVALENT ALKALI-CATION HEXAMETAPHOSPHATE ADMIXED WITH (B) FROM ABOUT 36.5 TO ABOUT 50 PARTS OF UNCOMPOSITED SUBMICRON-SIZED CALCIUM CARBONATE OF FROM ABOUT 0.1 TO ABOUT 0.35 MICRON PARTICLE SIZE, FROM NONE TO ABOUT 35% OF THE WEIGHT OF SAID CALCIUM CARBONATE BEING AT LEAST ONE OTHER COMPATIBLE TOOTHPASTE ABRASIVE INCORPORATED IN (C) FROM ABOUT 38 TO ABOUT 50 PARTS OF A MINERAL OIL HAVING A SPECIFIC GRAVITY AT 60*F. FROM ABOUT 0.870 TO ABOUT 0.905 AND A SAYBOLT VISCOSITY AT 100*F. OF ABOUT 180 TO ABOUT 495; WITH THE TOTAL SOLID INGREDIENTS AND OIL CONTENT SO PROPORTIONED TO ONE ANOTHER TO PROVIDE THE FINISHED PRODUCT WITH ACCEPTABLE TOOTHPASTE CONSISTENCY AND SUBSTANTIAL FREEDOM FROM SEPARATED OIL.
References Cited (Backward Citations)
US2216816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |