Patent US3662059A successfully refreshed from Google Patents.
US3662059A
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US
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Dentifrice composition
Assignee: Lever Brothers Co
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Filing: 1969-06-02
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Granted: 1972-05-09
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Expires: 1989-06-02
Abstract
Abstract THIS DISCLOSURE RELATES TO A DENTIFRICE COMPOSITION CONTAINING A POLYMER OF AN OLEFIN HAVING 2 TO 3 CARBON ATOMS, A FLUORINE-CONTAINING COMPOUND AND A SILICA XEROGEL. THIS DENTIFRICE COMPOSITION HAS A PH OF ABOUT 4.5 OR LESS.
Inventors
- 👤 Wilfried Wiesner
- 👤 Morton Pader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:41
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61K8/731; A61K8/19; A61K8/25; A61K8/27; A61K8/30; A61K8/33; A61K8/39; A61K8/81; A61K8/8105; A61K8/8111; A61Q; A61Q11/00
Claims Analysis
Total Claims: 0
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |