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PCE
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DIFF Subgroup
C09B 43/124

with monocarboxylic acids, carbamic esters or halides, mono- isocyanates, or haloformic acid esters

Introduced: January 1980

Title

Titles differ between systems:

IPC: with monocarboxylic acids, carbamic esters or halides, monoisocyanates, or haloformic acid esters

CPC: with monocarboxylic acids, carbamic esters or halides, mono- isocyanates, or haloformic acid esters

Full Title

Full titles differ between systems:

IPC:

Preparation of azo dyes from other azo compounds > by acylation of amino groups > with monocarboxylic acids, carbamic esters or halides, monoisocyanates, or haloformic acid esters

CPC:

Preparation of azo dyes from other azo compounds > by acylation of amino groups > with monocarboxylic acids, carbamic esters or halides, mono- isocyanates, or haloformic acid esters

CPC subdivides this area 3x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • C09B 43/1242 CPC only CPC only
  • C09B 43/1245 CPC only CPC only
  • C09B 43/1247 CPC only CPC only
  • C09B 43/128 Aliphatic, cycloaliphatic or araliphatic acids since 1980 IPC+CPC Available in IPC and CPC
  • C09B 43/132 having the carboxylic group directly attached to an aromatic carbocyclic ring since 1980 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C09,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 6,420
  2. NITTO DENKO CORPORATION JP 5,752
  3. HALLIBURTON ENERGY SERVICES GROUP US 5,650
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 5,635
  5. DOW GLOBAL TECHNOLOGIES US 4,844
  6. MERCK PATENT DE 4,779
  7. CHINESE ACADEMY OF SCIENCES 4,311
  8. FUJIFILM JP 4,205
  9. BASF (BADISCHE ANILIN & SODA FABRIK) DE 4,039
  10. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 3,931

Top Applicants (CPC)

Class C09,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 7,954
  2. HALLIBURTON ENERGY SERVICES GROUP US 6,584
  3. NITTO DENKO CORPORATION JP 6,500
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
  5. DOW GLOBAL TECHNOLOGIES US 6,324
  6. FUJIFILM JP 5,832
  7. MERCK PATENT DE 5,481
  8. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
  9. SAMSUNG DISPLAY KR 5,105
  10. NITTO DENKO CORPORATION 3,584