Patent US3331898A successfully refreshed from Google Patents.
US3331898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing metal oxide microspheres
Assignee: Individual
•
Filing: 1965-10-23
•
Granted: 1967-07-18
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Paul A Haas
- 👤 Sam D Clinton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:13
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/623; B; B01; B01J; B01J2/00; B01J2/02; B01J2/06; B01J2/08; C; C01; C01F; C01F15/00; C01G; C01G15/00; C01G25/00; C01G25/02; C01G56/00; C01G56/004; C01G56/005; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/51; C01P2006/00; C01P2006/21; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A PROCESS FOR FORMING GEL MICROSPHERES FROM SOL DROPLETS WHICH COMPRISES INTRODUCING THROUGH AN INLET ORIFICE A FINE STREAM OF AN AQUEOUS SOL SELECTED FROM THE GROUP CONSISTING OF URANIA, THORIA, PLUTONIA AND ZIRCONIA INTO A STREAM OF AN ORGANIC DRYING LIQUID TO THEREBY CONGEAL SAID DISPERSED SOL DROPLETS INTO GEL MICROSPHERES, THE IMPROVEMENT WHICH COMPRIESE ESTABLISHING A VELOCITY GRADIENT IN SAID DRYING LIQUID IMMEDIATELY ADJACENT TO SAID ORIFICE TO EFFECT A SHEARING FORCE ON SAID AQUEOUS SOL STREAM, INTRODUCING SAID SOL STREAM AT A FLOW RATE OF BETWEEN 10-25 CC./MINUTE INTO SAID DRYING LIQUID STREAM
Claim 2
Dependent Claim
97 words
IN A PROCESS FOR FORMING GEL MICROSPHERES FROM SOL DROPLETS WHICH COMPRISES INTRODUCING THROUGH AN INLET ORIFICE A FINE STREAM OF AN AQUEOUS SOL SELECTED FROM THE GROUP CONSISTING OF URANIA, THORIA, PLUTONIA AND ZIRCONIA INTO A STREAM OF AN ORGANIC DRYING LIQUID TO THEREBY CONGEAL SAID DISPERSED SOL DROPLETS INTO GEL MICROSPHERES, THE IMPROVEMENT WHICH COMPRIESE ESTABLISHING A VELOCITY GRADIENT IN SAID DRYING LIQUID IMMEDIATELY ADJACENT TO SAID ORIFICE TO EFFECT A SHEARING FORCE ON SAID AQUEOUS SOL STREAM, INTRODUCING SAID SOL STREAM AT A FLOW RATE OF BETWEEN 10-25 CC./MINUTE INTO SAID DRYING LIQUID STREAM
References Cited (Backward Citations)
US2299929A
Cited
US2566567A
Cited
US2495147A
Cited
US3208829A
Cited
US3042970A
Cited
US3290122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |