Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Reexamination Certificate
2005-04-12
2005-04-12
Kastler, Scott (Department: 1742)
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
C266S172000, C266S202000
Reexamination Certificate
active
06878183
ABSTRACT:
This invention relates to a method for sublimation refining which gives a high-purity product in high yield while preventing corrosion of the apparatus, contamination of the product and change in quality of the product and to an apparatus useful for the method. The apparatus of this invention for sublimation refining comprises a heat generating unit made of a material generating heat by electromagnetic induction, sublimating unit A and collecting units B and C, respectively independently controllable in temperature by electromagnetic induction heating and the inner surface or the inner tube of the sublimating or collecting unit is made of a material like metal and ceramic inert to sublimable substances. According to the method of this invention for sublimation refining, a sublimable substance is introduced to sublimating unit A, the sublimating unit is heated by electromagnetic induction thereby sublimating the sublimable substance, the sublimate is introduced to collecting unit B containing a zone controlled in temperature by electromagnetic induction heating and the object sublimable substance is collected.
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Hotta Shuhei
Ishii Kazuo
Soeda Mahito
Kastler Scott
Nippon Steel Chemical Co. Ltd.
Osaka Yuka Industries Co., Ltd.
Rader & Fishman & Grauer, PLLC
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