US3309209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1963-08-26
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Granted: 1967-03-14
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Jacques R Martinet
- 👤 Merton L Van Dreser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:03
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/44; C03; C03B; C03B5/00; C03B5/16; C03B5/235; C03B5/237; C03B5/2375; C04B35/03; C04B35/04; C04B35/043; C04B35/047; C04B35/12; C04B35/42; C04B35/48; Y; Y02; Y02P; Y02P40/00; Y02P40/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A REFRACTORY COMPOSITION ADAPTED TO FORM THE LINING OF A HIGH TEMPERATURE METALLURGICAL FURNACE, CONSISTING ESSTNTIALLY OF AT LEAST ONE REFRACTORY GRAIN MATERIAL CHOSEN FROM THE GROUP CONSISTING OF CHROMITE, MAGNESIA AND MAGNESIA SPINEL, AND FROM 20% TO 60% OF A REFRACTORY BONDING COMPONENT SUBSTANTIALLY ENTIRELY PASSING 35 MESH SCREEN, SAID BONDING COMPONENT INCLUDING FROM 10% TO 35% OF PERICLASE PARTICLES, SAID BONDING COMPONENT INCLUDING IN INTIMATE DISPERSION A ZIRCONIUM COMPOUND IN AMOUNT SUFFICIENT TO PROVIDE FROM 0.2 TO 2.0% ZRO2 BASED ON THE TOTAL WEIGHT OF THE REFRACTORY COMPOSITION, THE REMAINDER OF SAID BONDING COMPONENT BEING CHROMITE, SAID REFRACTORY COMPOSITION CONTAINING AT LEAST 10% CHROMITE AND NOT OVER 6 PERCENT SILICA AND NOT OVER 2 PERCENT CAO.
Claim 2
Dependent Claim
118 words
A REFRACTORY COMPOSITION ADAPTED TO FORM THE LINING OF A HIGH TEMPERATURE METALLURGICAL FURNACE, CONSISTING ESSTNTIALLY OF AT LEAST ONE REFRACTORY GRAIN MATERIAL CHOSEN FROM THE GROUP CONSISTING OF CHROMITE, MAGNESIA AND MAGNESIA SPINEL, AND FROM 20% TO 60% OF A REFRACTORY BONDING COMPONENT SUBSTANTIALLY ENTIRELY PASSING 35 MESH SCREEN, SAID BONDING COMPONENT INCLUDING FROM 10% TO 35% OF PERICLASE PARTICLES, SAID BONDING COMPONENT INCLUDING IN INTIMATE DISPERSION A ZIRCONIUM COMPOUND IN AMOUNT SUFFICIENT TO PROVIDE FROM 0.2 TO 2.0% ZRO2 BASED ON THE TOTAL WEIGHT OF THE REFRACTORY COMPOSITION, THE REMAINDER OF SAID BONDING COMPONENT BEING CHROMITE, SAID REFRACTORY COMPOSITION CONTAINING AT LEAST 10% CHROMITE AND NOT OVER 6 PERCENT SILICA AND NOT OVER 2 PERCENT CAO.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |