Patent US3608067A successfully refreshed from Google Patents.
US3608067A
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Dentifrice compositions containing insoluble salts of alkylene phosphonic acids
Assignee: Monsanto Co
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Filing: 1969-02-06
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Granted: 1971-09-21
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Expires: 1989-02-06
Abstract
Abstract Dentifrice composition containing as the primary polishing agent a substantially water-insoluble salt of an alkylene phosphonic acid such as the calcium salt of an alkylene diphosphonic acid having the formula, e.g.
Inventors
- 👤 Riyad R Irani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:11
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A composition according to claim 1, wherein the composition is a toothpaste.
Claim 2
Dependent Claim
34 words
A dentifrice composition as set forth in claim 1 wherein said polishing agent is a salt selected from the group consisting of a calcium salt of 1-hydroxy, 1-ethylidene diphosphonic acid and a hydrate thereof.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |