US PATENT SUBCLASS 210 / 483
.~ Supported, shaped or superimposed formed mediums


Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

348  DF  FILTER {25}
483.~ Supported, shaped or superimposed formed mediums {11}
484  DF  .~.~> Medium within foraminous supporting container or sheath
485  DF  .~.~> External cage-type support
486  DF  .~.~> Spaced wall type, e.g., hollow leaf {1}
488  DF  .~.~> Abutted or superimposed members {2}
493.1  DF  .~.~> Pleated {4}
494.1  DF  .~.~> Convolute {2}
495  DF  .~.~> Single ring or closed frame type
496  DF  .~.~> Bound, fused or matted, e.g., porous shapes, sponges, etc.
497.01  DF  .~.~> Cylindrical, conical, or trough shape {3}
498  DF  .~.~> Perforated or grooved plates
499  DF  .~.~> Screens, e.g., woven


DEFINITION

Classification: 210/483

(under subclass 348) Apparatus comprising: (1) a filter medium and supporting means therefore, (2) a filter medium having a defined significant gross structure or shape, or (3) super-imposed or abutted members forming a single filter element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

500+, for filter material, per se.

SEE OR SEARCH CLASS

209, Classifying, Separating, and Assorting Solids,

363+, especially subclasses 409+, for filter elements for separating solids. 413, Sheet Metal Container Making,

1+, for sheet-metal ware making processes which may include processes of making filter elements.