US3320179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Openly porous refractory nuclear fuel microspheres and method of preparation
Assignee: Individual
•
Filing: 1966-09-22
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Granted: 1967-05-16
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Expires: 1986-09-22
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Gens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:48
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/004; C01G56/005; B; B01; B01J; B01J2/00; B01J2/02; B01J2/06; B01J2/08; G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/623; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/14; C01P2006/16; C01P2006/21; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
A POROUS REFRACTORY MICROSPHERE FUEL PARTICLE SELECTED FROM THE GROUP CONSISTING OF THO2, UO2, PUO2, AND MIXTURES THEREOF HAVING AN OPEN POROSITY OF AT LEAST 15% OF THE PARTICLE VOLUME, WHEREIN PORES OPENING TO THE SURFACE OF SAID JPARTICLE COMMUNICATE WITH INNER JPORES OF SAID PARTICLE.
Claim 2
Dependent Claim
46 words
A POROUS REFRACTORY MICROSPHERE FUEL PARTICLE SELECTED FROM THE GROUP CONSISTING OF THO2, UO2, PUO2, AND MIXTURES THEREOF HAVING AN OPEN POROSITY OF AT LEAST 15% OF THE PARTICLE VOLUME, WHEREIN PORES OPENING TO THE SURFACE OF SAID JPARTICLE COMMUNICATE WITH INNER JPORES OF SAID PARTICLE.
Claim 3
Independent Claim
61 words
A METHOD FOR PREPARING PJOROUS REFRACTORY FUEL MICROSPHERES BY SOL-GEL TECHNIQUES WHEREIN GEL MICROSPHERES ARE PREPARED FROM AQUEOUS SOLS BY DISPERSING SAID SOL IN A WATER-IMMISCIBLE ORGANIC LIQUID COMPRISING THE STEPS OF INCORPORATING A VOLATILE INORGANIC MATERIAL WITHIN THE GEL MICROSPHERES AND THEREAFTER CALCINING SAID GEL MICROSPHERES AT AN ELEVATED TEMPERATURE, THEREBY EFFECTING VOLATIZIZATION OF SAID INORGANIC MATERIAL AND PORE FORMATION.
Claim 4
Independent Claim
61 words
A METHOD FOR PREPARING PJOROUS REFRACTORY FUEL MICROSPHERES BY SOL-GEL TECHNIQUES WHEREIN GEL MICROSPHERES ARE PREPARED FROM AQUEOUS SOLS BY DISPERSING SAID SOL IN A WATER-IMMISCIBLE ORGANIC LIQUID COMPRISING THE STEPS OF INCORPORATING A VOLATILE INORGANIC MATERIAL WITHIN THE GEL MICROSPHERES AND THEREAFTER CALCINING SAID GEL MICROSPHERES AT AN ELEVATED TEMPERATURE, THEREBY EFFECTING VOLATIZIZATION OF SAID INORGANIC MATERIAL AND PORE FORMATION.
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |