US2601238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice polishing composition
Assignee: Victor Chemical Works
•
Filing: 1950-02-14
•
Granted: 1952-06-24
•
Expires: 1970-02-14
Abstract
No abstract record available.
Inventors
- 👤 Russell N Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:05
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
25 words
A STABILIZED DICALCIUM PHOSPHATE ABRASIVE COMPOSITION COMPRISING A POWDERED MIXTURE OF 70-90 PARTS DICALCIUM PHOSPHATE (DIHYDRATE), 15-5 PARTS TRICALCIUM PHOSPHATE AND 15-5 PARTS TRIMAGNESIUM PHOSPATE.
Claim 2
Dependent Claim
25 words
A STABILIZED DICALCIUM PHOSPHATE ABRASIVE COMPOSITION COMPRISING A POWDERED MIXTURE OF 70-90 PARTS DICALCIUM PHOSPHATE (DIHYDRATE), 15-5 PARTS TRICALCIUM PHOSPHATE AND 15-5 PARTS TRIMAGNESIUM PHOSPATE.
References Cited (Backward Citations)
US2041473A
Cited
US2218172A
Cited
US2078498A
Cited
US2191199A
Cited
US2216816A
Cited
US2216821A
Cited
US2359326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |