US3642979A
Expired / Lapsed
US
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Dentifrice compositions containing insoluble salts of amino alkylene phosphoric acids
Assignee: Monsanto Co
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Filing: 1969-02-06
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Granted: 1972-02-15
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Expires: 1989-02-06
Abstract
Abstract DENTIFRICE COMPOSTITON CONTAINING AS THE PRIMARY POLISHING AGENT A SUBSTANITIALLY WATER-INSOLUBLE SALT OF AN AMINO-ALKYLENE PHOSPHONIC ACID SUCH AS THE CALCIUM SALT OF AN AMINO TRI(ALKLIDENE PHOSPHONIC ACID) HAVING THE FORMULA, E.G. N-(CH2-PO3H2)3
Inventors
- 👤 Riyad R Irani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55; A61Q; A61Q11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |