Patent US4414050A successfully refreshed from Google Patents.
Patent US3273974A successfully refreshed from Google Patents.
US3273974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidization of sinterable fines
Assignee: Individual
•
Filing: 1965-10-11
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Granted: 1966-09-20
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Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 John D Gabor
- 👤 Manfred G Baerns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:02
CPC Classifications
C; C01; C01G; C01G43/00; C01G43/04; C01G43/06; C01G43/063; C01G43/066; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD OF FLUIDIZING AND REACTING URANOSIC OXIDE FINES OF ABOUT 4 TO 20 MICRONS IN DIAMETER WITH FLUORINE GAS TO YIELD URANIUM HEXAFLUORIDE, COMPRISING: MIXING SAID URANOSIC OXIDES FINES ALUMINA PARTICLES OF ABOUT 200 TO 300 MICRONS IN DIAMETER TO FORM A BED OF ABOUT 30 WEIGHT PERCENT ALUMINA, SAID BED BEING ABOUT 15 INCHES IN DEPTH; INTRODUCING NITROGEN GAS INTO SAID BED AT A VELOCITY OF ABOUT 0.4 TO 0.5 FOOT PER SECOND WITH RESPECT TO THE CROSS-SECTION OF THE BED, THEREBY FLUIDIZING A LOWER PORTION OF SAID BED AND CREATING A ZONE OF AGITATION IN AN UPPER PORTION OF SAID BED ABOUT 9 INCHES FROM THE BOTTOM OF SAID BED; AND INTRODUCING FLUORINE GAS INTO SAID FLUIDIZED BED AT A LEVEL CORRESPONDING TO THE LEVEL OF SAID ZONE OF AGITATION.
Claim 2
Independent Claim
132 words
A METHOD OF FLUIDIZING AND REACTING URANYL FLUORIDE FINES OF ABOUT 10 MICRONS IN DIAMETER WITH FLUORINE GAS TO YIELD URANIUM HEXAFLUORIDE, COMPRISING: MIXING SAID URANYL FLUORIDE FINES WITH ALUMINA PARTICLES OF ABOUT 200 TO 300 MICRONS IN DIAMETER TO FORM A BED OF ABOUT 40 WEIGHT PERCENT ALUMINA, SAID BED BEING ABOUT 4 FEET IN DEPTH; INTRODUCING NITROGEN GAS INTO SAID BED AT A VELOCITY OF ABOUT 1.2 TO 1.4 FEET PER SECOND WITH RESPECT TO THE CROSS-SECTION OF THE BED, THEREBY FLUIDIZING A LOWER PORTION OF SAID BED AND CREATING A ZONE OF AGITATION IN AN UPPER PORTION OF SAID BED ABOUT 2 FEET FROM THE BOTTOM OF SAID BED, AND INTRODUCING FLUORINE GAS INTO SAID FLUIDIZED BED AT A LEVEL CORRESPONDING TO THE LEVEL OF SAID ZONE OF AGITATION.
References Cited (Backward Citations)
US2533026A
Cited
US3164440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |