US3929601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of pentafluorides
Assignee: United States Department of Energy
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Filing: 1974-03-26
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Granted: 1975-12-30
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Expires: 1994-03-26
Abstract
Abstract The reactions of uranium, molybdenum, rhenium, osmium and iridium hexafluorides with hydrogen gas in the presence of ultraviolet radiation or with silicon powder in an anhydrous HF slurry provide especially useful, high yield syntheses of pure pentafluorides.
Inventors
- 👤 Larned B Asprey
- 👤 Jr Robert T Paine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:56
CPC Classifications
C; C01; C01G; C01G55/00; C01G55/005; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123; C01B; C01B7/00; C01B7/19; C01B7/191; C01B9/00; C01B9/08; C01G39/00; C01G39/04; C01G43/00; C01G43/04; C01G43/06; C01G47/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
49 words
A METHOD OF PREPARING PURE PENTAFLUORIDES COMPRISING REACTING AT LEAST ONE OF THE HEXAFLUORIDES SELECTED FROM THE CLASS CONSISTING OF, MOLYBDENUM, RHENIUM, OSMIUM, AND IRIDIUM HEXAFLUORIDE, WITH ONE EQUIVALENT OF HYDROGEN GAS IN THE PRESENCE OF ULTRAVIOLET RADIATION, AT ROOM TEMPERATURE AND FOR A PERIOD OF ABOUT ONE DAY.
Claim 2
Independent Claim
49 words
A METHOD OF PREPARING PURE PENTAFLUORIDES COMPRISING REACTING AT LEAST ONE OF THE HEXAFLUORIDES SELECTED FROM THE CLASS CONSISTING OF, MOLYBDENUM, RHENIUM, OSMIUM, AND IRIDIUM HEXAFLUORIDE, WITH ONE EQUIVALENT OF HYDROGEN GAS IN THE PRESENCE OF ULTRAVIOLET RADIATION, AT ROOM TEMPERATURE AND FOR A PERIOD OF ABOUT ONE DAY.
Claim 3
Dependent Claim
18 words
The method of claim 1 in which the said hexafluoride is reacted in the presence of platinum gauze.
Claim 4
Dependent Claim
13 words
The method of claim 2 in which the said hexafluoride is rhenium hexafluoride.
Claim 5
Dependent Claim
13 words
The method of claim 2 in which the said hexafluoride is iridium hexafluoride.
Claim 6
Dependent Claim
13 words
The method of claim 2 in which the said hexafluoride is osmium hexafluoride.
Claim 7
Dependent Claim
13 words
The method of claim 2 in which the said hexafluoride is molybdenum hexafluoride.
References Cited (Backward Citations)
US3127334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |