(under the class definition) Subject matter relating to methods of concentration.
SEE OR SEARCH CLASS
23, Chemistry: Physical Processes,
295+, for processes of concentration by evaporation combined with significant crystallization.
127, Sugar, Starch, and Carbohydrates,
61+, for a concentration process peculiar to sugar.
210, Liquid Purification or Separation,
774+, for a process of separating combined with heating or cooling. 424, Drug, Bio-Affecting and Body Treating Compositions, appropriate subclasses for a process for producing a concentrate composition of that class; e.g., concentrating animal extracts such as fish liver oils to obtain a vitamin composition, etc.
426, Food or Edible Material: Processes, Compositions, and Products, appropriate subclasses for a food working operation combined with the step concentrating.