Roy Eldon Blackstone from 3539 Dogwood Dr S, Salem, OR 97302, age 91, Phone: 503 363-4531

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Process For Decreasing The Level Of Impurities In Zirconium Chloride, Titanium Chloride And Hafnium Chloride
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US Patent:

51715490, Dec 15, 1992
Filed:

May 22, 1991
Appl. No.:

7/704120
Inventors:

Ronald E. Walsh - Corvallis OR
Peter W. Krag - Albany OR
Roy E. Blackstone - Turner OR
Duane L. Hug - Albany OR
Assignee:

Teledyne Wah Chang Albany - Albany OR
International Classification:

C01G 2300
C01G 2500
C01G 2700
US Classification:

423 79
Abstract:

An improved halogenator process and system is provided which significantly and economically decreases the level of impurities in the processing of various refractory metals and their halides and particularly hafnium tetrachloride which is condensed from gases produced by the chlorination of Zircon.

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