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US2647073A
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Ammoniated dentifrice containing anhydrous dicalcium phosphate
Assignee: Amm-I-Dent Inc
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Filing: 1951-04-13
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Granted: 1953-07-28
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Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:30
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61K8/30; A61K8/40; A61K8/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A DENTIFRICE PASTE COMPRISING FROM 3% TO 50% BY WEIGHT OF UREA, FROM 1% TO 7% BY WEIGHT OF DIAMMONIUM HYDROGEN PHOSPHATE, BETWEEN 40% AND 50% OF POLISHING AGENTS INCLUDING TRICALCIUM PHOSPHATE, AND FROM 1% TO 25% ANHYDROUS DICALCIUM PHOSPHATE, A HUMECTANT AND SUFFICIENT WATER TO FORM A PASTE.
References Cited (Backward Citations)
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US2018410A
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US2556959A
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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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |