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PCE
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DIFF Subclass Not Allocatable
C12N

MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA (microbiological testing media C12Q1/00)

Introduced: January 1980

Description

C12N covers microorganisms, enzymes, and their compositions, including methods for propagation, preservation, and maintenance of microbial cultures. It encompasses genetic engineering and mutation techniques applied to microorganisms, as well as the formulation and preparation of culture media required for microbial growth. This subclass serves biotechnology and industrial microbiology applications ranging from pharmaceutical production to fermentation processes, but excludes downstream applications of microbial products (handled in other C12 divisions) and general chemistry of enzymes outside a microbiological context.

Title

Titles differ between systems:

IPC: MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA

CPC: MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA (microbiological testing media C12Q1/00)

Full Title

Full titles differ between systems:

IPC:

MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA

CPC:

MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA (microbiological testing media C12Q1/00)

CPC subdivides this area 6x more granularly than IPC with 43 additional codes.

43 codes are CPC-only extensions.

Note: 43 CPC extensions are marked as secondary classification only.

6 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • C12N 13/00 Treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves since 1980 IPC+CPC Available in IPC and CPC
  • C12N 2300/00 Indexing codes associated with general methodologies in the field of biologically active non-coding nucleic acids 2nd only CPC only CPC only
  • C12N 2511/00 Cells for large scale production 2nd only CPC only CPC only
  • C12N 2513/00 3D culture 2nd only CPC only CPC only
  • C12N 2523/00 Culture process characterised by temperature 2nd only CPC only CPC only