Patent
1979-06-04
1981-12-08
Envall, Jr., R. N.
13 10, F27B 306, F27D 315
Patent
active
043049540
ABSTRACT:
The present invention provides a process and apparatus for the production of refractory oxide materials having high fusion points. By high fusion points is meant melting points greater than 2400.degree. C.
The process of the present invention comprises the steps of:
REFERENCES:
patent: 1229494 (1917-06-01), Marfield
patent: 2290028 (1942-07-01), Brooke
patent: 2790019 (1957-04-01), Stalego
patent: 3752895 (1973-08-01), Clishem et al.
patent: 4097032 (1978-06-01), Mauritz
Envall, Jr. R. N.
Green Raymond W.
Holt William H.
Kennecott Corporation
Studley Donald C.
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