US PATENT SUBCLASS 422 / 245.1
.~ Crystallizer

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

243  DF  PHYSICAL TYPE APPARATUS {8}
245.1.~ Crystallizer {5}
250.1  DF  .~.~> Crucible-free zone refiner
251  DF  .~.~> Including means separating and conveying crystals to a melting zone
252  DF  .~.~> Hydraulic classifier with crystallizer
253  DF  .~.~> Including feed compartment for introducing nutrient
254  DF  .~.~> Movable crystallizer or scraping means

DEFINITION

Classification: 422/245.1

Crystallizer:

(under subclass 243) Non-coating apparatus for producing non-metal, non-glass crystalline material, with no clear intent to provide a shaped article, and with no intent to grow single-crystal.

(1) Note. This subclass provides for the apparatus which

operates to crystallize by only a physical (i.e., not chemical) reaction.

(2) Note. Apparatus which involve removing heat to solidify a material are generally provided for elsewhere, for example in Class 62.

(3) Note. Apparatus for coating or molding are generally provided for elsewhere, for example in Classes 117, 118, 164, 249, or 425.

(4) Note. Apparatus which involve evaporating which causes crystallizing or precipitating, and involves no significant chemical change, are generally provided for in Class 159.

SEE OR SEARCH THIS CLASS, SUBCLASS:

105+, for non-coating crystallizing apparatus which further includes a means for automatically modifying an operation thereof in response to a means sensing an operating condition or a change of the same. 129+, for non-coating crystallization apparatus which includes means for a chemical reaction.

SEE OR SEARCH CLASS

62, Refrigeration, for apparatus peculiar to removing heat from a substance and apparatus peculiar to handling the resultant product, especially

123+, for apparatus having means to separate a constituent of a liquid mixture by cooling it and subclasses 317+ for apparatus having a filter or gravitational separator for the fluid cooled by refrigeration means.

65, Glass Manufacturing, for apparatus making glass, especially

187+, and 193+ for means for pulling glass from a melt.

117, Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor,

200+, for processes and non-coating apparatus for growing therein-defined single-crystal of all types of materials, including inorganic or organic.

118, Coating Apparatus, for apparatus for applying or obtaining a surface coating on a base, where it is not provided for in another class. See the Class 118 definition for guidance in the placement of coating apparatus art.

127, Sugar, Starch, and Carbohydrates,

15+, and 17+ for apparatus for crystallizing or treating crystals of class-defined materials. 159, Concentrating Evaporators, for apparatus for evaporating, including those which cause crystallization, absent defined vapor recovery means (except energy recovery), and absent significant chemical changes.

164, Metal Founding,

139+, for apparatus for molding non-semiconductor metal.

196, Mineral Oils: Apparatus,

14.5, for apparatus to separate wax which may include chilling to solidify.

210, Liquid Purification or Separation, for apparatus for crystallizing where the primary intent is a Class 210 defined purpose. Since references are placed according to disclosed intent, cross-referencing is required where secondary intent is disclosed or evident.

249, Static Molds, appropriate subclasses for a static mold of fluent material not combined with a diverse art device.

425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

6+, for apparatus for making non-metal, non-glass powders, which may be crystalline, from liquid by means dividing or comminuting and allowing the liquid to solidify while in particulate form of a desired size or shape but with no shaping surface; subclass 77 for ultra-high-pressure generating apparatus; and appropriate subclasses for dynamic molding apparatus for other than metal or glass.