US2542886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice
Assignee: ILLINOLS FOUNDATION, University of
•
Filing: 1948-10-01
•
Granted: 1951-02-20
•
Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 Edward C Wach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:17
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: 2
Claim 1
Independent Claim
29 words
A DENTIFRICE COMPRISING APPROXIMATELY 3 PER CENT BY WEIGHT OF UREA, 5 PER CENT BY WEIGHT OF DIBASIC AMMONIUM PHOSPHATE AND AN INERT NONSUGARY CARRIER ADAPTED FOR ORAL ADMINISTRATION.
Claim 2
Dependent Claim
29 words
A DENTIFRICE COMPRISING APPROXIMATELY 3 PER CENT BY WEIGHT OF UREA, 5 PER CENT BY WEIGHT OF DIBASIC AMMONIUM PHOSPHATE AND AN INERT NONSUGARY CARRIER ADAPTED FOR ORAL ADMINISTRATION.
References Cited (Backward Citations)
DE291565C
Cited
US1377780A
Cited
US1717723A
Cited
US1969340A
Cited
FR803161A
Cited
US2207074A
Cited
US2452054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |