US3007772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of metallic fluorides
Assignee: Dow Chemical Co
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Filing: 1957-05-23
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Granted: 1961-11-07
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Expires: 1977-05-23
Abstract
No abstract record available.
Inventors
- 👤 Olstowski Franciszek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
C; C01; C01G; C01G43/00; C01G43/04; C01G43/06; C01B; C01B35/00; C01B35/06; C01F; C01F17/00; C01F17/20; C01F17/253; C01F17/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE PROCESS WHICH COMPRISES: CONTACTING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF OXIDES OF MAGNESIUM, BORON, AND YTTRIUM WITH AN EXCESS OF FLUOROCARBON CONTAINING UP TO 3 CARBON ATOMS, AT A TEMPERATURE ABOVE 700 DEGREES CENTIGRADE, AND, SEPARATING THE CORRESPONDING METALLIC FLUORIDE FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
47 words
THE PROCESS WHICH COMPRISES: CONTACTING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF OXIDES OF MAGNESIUM, BORON, AND YTTRIUM WITH AN EXCESS OF FLUOROCARBON CONTAINING UP TO 3 CARBON ATOMS, AT A TEMPERATURE ABOVE 700 DEGREES CENTIGRADE, AND, SEPARATING THE CORRESPONDING METALLIC FLUORIDE FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |