US2839448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice containing a stannous compound and a carboxylated alkyl cellulose ether
Assignee: Procter and Gamble Co
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Filing: 1955-02-09
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Granted: 1958-06-17
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Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Richard E Hager
- 👤 Carroll R Reiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/72; A61K8/73; A61K8/731
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
A TOOTHPASTE COMPRISING A WATER-SOLUBLE STANNOUS COMPOUND AND AT LEAST ONE WATER-SOLUBLE OF A CARBOXYLATED ALKYL CELLULOSE ETHER, SAID TOOTHPASTE BEING FREE FROM NATURAL GUM BINDERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |