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CPC Definition - Subclass B01B

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Last Updated Version: 2025.08
B01B
BOILING; BOILING APPARATUS {; EVAPORATION; EVAPORATION APPARATUS}
Definition statement

This place covers:

Documents where liquid evaporation or boiling without separation takes place.

Relationships with other classification places

Semi-conductor fabrication involving evaporation step process is classified in H01L 21/00.

Coating by vacuum evaporation is classified in C23C 14/00

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Feeding chemical reactors, in particular reformer

B01J 8/0278, B01J 19/0093

Selective catalytic reduction [SCR]

F01N 3/2066

Boiling; Boiling apparatus for physical or chemical purposes {; Evaporation in general}
Definition statement

This place covers:

  • Boiling; Boiling apparatus for physical or chemical purposes, e.g. preventing foaming or preventing bumping
  • Evaporation
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Concentration of starch suspensions

C08B 30/08

Evaporators or boiling pans specially adapted for sugar juices; Evaporating or boiling sugar juices

C13B 25/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Steam generation

F22

Domestic boilers

F24

{Evaporation for physical or chemical purposes; Evaporation apparatus therefor, e.g. evaporation of liquids for gas phase reactions}
Definition statement

This place covers:

Evaporation or evaporation apparatus for physical or chemical purposes, i.e. transformation of a liquid into gaseous form to be introduced in a further step (mainly reaction), e.g. evaporation of liquids for gas phase reactions or evaporator for organic materials.

Relationships with other classification places

In B01B 1/00 there is no separation of components, while in B01D 1/00 there is separation of components.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaporation for separation

B01D

Chemical vapour deposition

C23C

Cooling by evaporation

F01P 9/02

Evaporation of fuels to be fed

F23D

Refrigeration by evaporation

F25B

Drying by evaporation

F26B

Evaporation for preparing samples for analysis

G01N

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

evaporation

liquid vaporisation that is a surface phenomenon that occurs at any temperature

boiling

liquid vaporisation that is a bulk phenomenon that only occurs when the temperature of the liquid is above the boiling point of the liquid

Preventing foaming
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Preventing foaming during degasification

B01D 19/02

Boiling apparatus provided with reflux condenser
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Condensation in separation

B01D 5/0063

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

reflux condenser

condenser in which the hot solvent vapours of a liquid being heated are cooled and allowed to drip back into the boiling apparatus