Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2007-05-01
2007-05-01
Le, H. Thi (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S404000
Reexamination Certificate
active
11094544
ABSTRACT:
A particle having a magnesium aluminate core and a fluoride salt coating on the core. The particle has been heated in an oxidizing atmosphere to a temperature in the range of about 400° C. to about 750° C. A method of making a particle by mixing a magnesium aluminate core with a solution of a fluoride salt in a solvent to form a slurry and spraying the slurry into a drying column. The slurry enters the column as an aerosol under thermal conditions that avoid boiling the solvent. The thermal conditions in the column evaporate the solvent as the aerosol moves through the column to form a coating of the fluoride salt on the core while substantially avoiding spalling.
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Villalobos, U.S. Appl. No. 11/094,545.
Aggarwal Ishwar D.
Bayya Shyam
Sanghera Jasbinder S.
Villalobos Guollermo R.
Guest Rae Lynn
Karasek John J.
Le H. Thi
The United States of America as represented by the Secretary of
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