US2958576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of a metal fluoride
Assignee: Dow Chemical Co
•
Filing: 1958-04-07
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Granted: 1960-11-01
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Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Olstowski Franciszek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:23
CPC Classifications
C; C01; C01D; C01D15/00; C01D15/04; C01B; C01B9/00; C01B9/08; C01D3/00; C01D3/02; C01F; C01F11/00; C01F11/20; C01F11/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR THE PREPARATION OF A METAL FLUORIDE, WHICH COMPRISES CONTACTING A CARBONATE SELECTED FROM THE GROUP CONSISTING OF THE CARBONATES OF LITHIUM, SODIUM, POTASSIUM, BARIUM, AND CALCIUM WITH A LOWER ALIPHATIC FLUOROCARBON AT A TEMPERATURE IN THE RANGE OF 500* TO 900*C., AND SEPARATING THE MEATAL FLUORIDE FROM THE RESULTING REACTION PRODUCT.
Claim 2
Dependent Claim
54 words
A PROCESS FOR THE PREPARATION OF A METAL FLUORIDE, WHICH COMPRISES CONTACTING A CARBONATE SELECTED FROM THE GROUP CONSISTING OF THE CARBONATES OF LITHIUM, SODIUM, POTASSIUM, BARIUM, AND CALCIUM WITH A LOWER ALIPHATIC FLUOROCARBON AT A TEMPERATURE IN THE RANGE OF 500* TO 900*C., AND SEPARATING THE MEATAL FLUORIDE FROM THE RESULTING REACTION PRODUCT.
References Cited (Backward Citations)
US2674518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |