US2996353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium fluochromate and the process for preparing the same
Assignee: EIDP Inc
•
Filing: 1959-04-01
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Granted: 1961-08-15
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Expires: 1979-04-01
Abstract
No abstract record available.
Inventors
- 👤 Deyrup Alden Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:22
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34; C23C18/36; C01; C01G; C01G37/00; C01G37/006; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
THE CRYSTALLINE DIVALENT CHROMIUM SALT OF SUBSTANTIALLY THE FORMULA, NA2CRF4, CHARACTERIZED BY HIGH STABILITY IN AIR AND APPRECIABLE SOLUBILITY IN WATER.
References Cited (Backward Citations)
US2203670A
Cited
US2883311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |