Patent US3129093A successfully refreshed from Google Patents.
US3129093A
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Process for producing a composite metal oxide particle in a colloidal aquasol
Assignee: EIDP Inc
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Filing: 1961-11-30
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Granted: 1964-04-14
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Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Guy B Alexander
- 👤 Paul C Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:18
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/80; C04B41/81; B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22; C22; C22C; C22C1/00; C22C1/10; C22C1/1026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PROCESS FOR PRODUCING A PARTICULATE METAL OXIDE COMPOSITION THE STEPS COMPRISING FORMING A COLLODIAL AQUASOL OF SUBSTANTIALLY DISCRETE PARTICLES WHICH ARE 5 TO 250 MILLIMICRONS IN SIZE AND COMPRISE A REFRACTORY METAL OXIDE FILLER HAVING A MELTING POINT ABOVE 1550*C. AND A FREE ENERGY OF FORMATION AT 1000*C. GREATER THAN 100 KILOCALORIES PER GRAM ATOM OF OXYGEN, EFFECTING CONTACT BETWEEN THE DISPERSED FILLER PARTICLES IN SAID AQUASOL AND A DISSOLVED COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF VANADIUM, NIOBIUM, MANGANESE, CHROMIUM, AND TITANIUM, PRECIPITATING AN OXIDE OF THE SELECTED METAL FROM SAID DISSOLVED COMPOUND IN CONTACT WITH THE DISPERSED REFRACTORY FILLER PARTICLES WHEREBY THE PARTICLES ARE COATED WITH THE PRECIPITATED OXIDE, AND RECOVERING THE COATED FILLER FROM THE LIQUID.
Claim 2
Dependent Claim
124 words
IN A PROCESS FOR PRODUCING A PARTICULATE METAL OXIDE COMPOSITION THE STEPS COMPRISING FORMING A COLLODIAL AQUASOL OF SUBSTANTIALLY DISCRETE PARTICLES WHICH ARE 5 TO 250 MILLIMICRONS IN SIZE AND COMPRISE A REFRACTORY METAL OXIDE FILLER HAVING A MELTING POINT ABOVE 1550*C. AND A FREE ENERGY OF FORMATION AT 1000*C. GREATER THAN 100 KILOCALORIES PER GRAM ATOM OF OXYGEN, EFFECTING CONTACT BETWEEN THE DISPERSED FILLER PARTICLES IN SAID AQUASOL AND A DISSOLVED COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF VANADIUM, NIOBIUM, MANGANESE, CHROMIUM, AND TITANIUM, PRECIPITATING AN OXIDE OF THE SELECTED METAL FROM SAID DISSOLVED COMPOUND IN CONTACT WITH THE DISPERSED REFRACTORY FILLER PARTICLES WHEREBY THE PARTICLES ARE COATED WITH THE PRECIPITATED OXIDE, AND RECOVERING THE COATED FILLER FROM THE LIQUID.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |