US2684284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and purification of chromyl fluoride
Assignee: Temple University
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Filing: 1951-08-11
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Granted: 1954-07-20
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Expires: 1971-08-11
Abstract
No abstract record available.
Inventors
- 👤 Arisitid V Grosse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:58
CPC Classifications
C; C01; C01G; C01G37/00; C01G37/04; C01G37/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE METHOD OF PRODUCING CHROMYL FLUORIDE WHICH COMPRISES REACTING ONE PART BY WEIGHT OF CHROMIUM TRIOXIDE WITH ABOUT 12 OR MORE PARTS BY WEIGHT OF ANHYDROUS HYDROGEN FLUORIDE, FORMING CHROMYL FLUORIDE AND WATER WITH AN EXCESS OF HYDROGEN FLUORIDE BY SAID REACTION, DISSOLVING SAID WATER IN SAID HYDROGEN FLUORIDE TO FORM A SOLUTION EXCESS HYDROGEN FLUORIDE AND WATER, COOLING SAID MIXTURE OF CHROMYL FLUORIDE AND SAID SOLUTION TO -78* C., LIQUEFYING SAID SOLUTION BY SAID COOLING, FORMING CATALYST OF SAID CHROMYL FLOURIDE INSOLUBLE IN SAID SOLUTION AT -78* C. AND CONTAINING NOT MORE THAN A SLIGHT PROPORTION OF HYDROGEN FLUORIDE, DECANTING SAID LIQUID SOLUTION FROM SAID INSOLUBLE CRYSTALS, AND HEATING SAID CRYSTALS TO 31.6* C. TO MELT SAID CRYSTALS.
Claim 2
Independent Claim
119 words
THE METHOD OF PRODUCING CHROMYL FLUORIDE WHICH COMPRISES REACTING ONE PART BY WEIGHT OF CHROMIUM TRIOXIDE WITH ABOUT 12 OR MORE PARTS BY WEIGHT OF ANHYDROUS HYDROGEN FLUORIDE, FORMING CHROMYL FLUORIDE AND WATER WITH AN EXCESS OF HYDROGEN FLUORIDE BY SAID REACTION, DISSOLVING SAID WATER IN SAID HYDROGEN FLUORIDE TO FORM A SOLUTION EXCESS HYDROGEN FLUORIDE AND WATER, COOLING SAID MIXTURE OF CHROMYL FLUORIDE AND SAID SOLUTION TO -78* C., LIQUEFYING SAID SOLUTION BY SAID COOLING, FORMING CATALYST OF SAID CHROMYL FLOURIDE INSOLUBLE IN SAID SOLUTION AT -78* C. AND CONTAINING NOT MORE THAN A SLIGHT PROPORTION OF HYDROGEN FLUORIDE, DECANTING SAID LIQUID SOLUTION FROM SAID INSOLUBLE CRYSTALS, AND HEATING SAID CRYSTALS TO 31.6* C. TO MELT SAID CRYSTALS.
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |