US PATENT SUBCLASS 106 / 744
.~.~.~.~ Employment of a fluidized bed

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
638  DF  .~ Inorganic settable ingredient containing {30}
713  DF  .~.~ Portland type cement {13}
739  DF  .~.~.~ Portland type cement per se (e.g., clinker preparation, etc.) {26}
744.~.~.~.~ Employment of a fluidized bed

DEFINITION

Classification: 106/744

Employment of a fluidized bed:

(under subclass 739) Subject matter employing a fluidized

bed.

(1) Note. A fluidized bed is defined here to mean a bed of solid particles with gas flowing upward through the particles with sufficient velocity to keep the particles suspended and in motion in the gas without blowing them bodily out of the bed. The suspended particles act much like a fluid.

(2) Note. A stirred bed is generally not considered a fluidized bed. However, when a applicant refers to a fluidized bed the patent should be included in this subclass and also any other appropriate subclass, regardless of whether it meets the strict definition.