US2550207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice compositions
Assignee: STWB Inc
•
Filing: 1949-01-25
•
Granted: 1951-04-24
•
Expires: 1969-01-25
Abstract
No abstract record available.
Inventors
- 👤 Maurice L Tainter
- 👤 Jr Emil T Hinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:37
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26; A61Q; A61Q11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A DENTIFRICE COMPRISING MICROCRYSTALLINE ALUMINUM HYDROXIDE HAVING A PARTICLE SIZE SUBSTANTIALLY IN THE RANGE OF 0.025 TO 0.5 MICRONS, A DENTIFRICE VEHICLE AND A DETERGENT.
Claim 2
Dependent Claim
25 words
A DENTIFRICE COMPRISING MICROCRYSTALLINE ALUMINUM HYDROXIDE HAVING A PARTICLE SIZE SUBSTANTIALLY IN THE RANGE OF 0.025 TO 0.5 MICRONS, A DENTIFRICE VEHICLE AND A DETERGENT.
References Cited (Backward Citations)
DE461914C
Cited
US2010910A
Cited
US2194218A
Cited
US2196150A
Cited
US2222969A
Cited
US2247624A
Cited
US2359326A
Cited
US2377057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |