Patent US2783182A successfully refreshed from Google Patents.
US2783182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-staining chlorophyll preparations
Assignee: Colgate Palmolive Co
•
Filing: 1953-02-24
•
Granted: 1957-02-26
•
Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Manno Fredrick Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:01
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/30; A61K8/49; A61K8/494; A61K8/72; A61K8/81; A61K8/817; A61K8/8176; A61Q11/00; A61Q11/02; A61Q9/00; A61Q9/02; A61K2800/00; A61K2800/20; A61K2800/26; A61K2800/40; A61K2800/52; A61K2800/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A DENTIFRICE COMPOSITION COMPRISING AT LEAST ABOUT 20% BY WEIGHT OF POLISHING MATERIAL, UP TO 5% BY WEIGHT OF AN ORGANIC DETERGENT, ABOUT .001 TO 5% BY WEIGHT OF CHLOROPHYLLIN NORMALLY TENDING TO DEPOSIT A GREENISH STAIN ON AN ABSORBENT, SURFACE, AND UP TO 5% BY WEIGHT OF A WATER-SOLUBLE POLYVINYLPYRROLIDONE HAVING AN AVERAGE MOLECULAR WEIGHT OF 10,000 TO 300,000, THE RATIO OF SAID POLYVINYLPYRRLIDONE TO SAID CHLOROPHYLIN BEING AT LEAST ABOUT 1:1 BY WEIGHT AND SUFFICIENT TO INHIBIT THE STAINING OF THE ABSORBENT SURFACE BY THE CHLOROPHYLLIN.
References Cited (Backward Citations)
GB601801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |