US2606812A
Expired / Lapsed
US
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Potassium stannous fluoride
Assignee: Wyeth LLC
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Filing: 1951-08-31
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Granted: 1952-08-12
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Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 William F Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:39
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61Q; A61Q11/00; C; C01; C01G; C01G19/00; C01G19/04; D21H21/00; D21H21/14; D21H21/34; D21H5/00; D21H5/0002
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
THE METHOD FOR THE PREPARATION SNF2-KF COMPRISING MIXING AQUEOUS SOLUTIONS OF POTASSIUM FLUORIDE AND STANNOUS CHLORIDE, AND THEN REMOVING THE PRECIPITATE FROM THE REACTION MIXTURE.
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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |