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CPC Subgroup
C09B 47/08

Preparation from other phthalocyanine compounds

Full Title

Porphines; Azaporphines > Phthalocyanines > Preparation from other phthalocyanine compounds

7 direct subcodes

Child Classifications

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  • C09B 47/10 Obtaining compounds having halogen atoms directly bound to the phthalocyanine skeleton
  • C09B 47/18 Obtaining compounds having oxygen atoms directly bound to the phthalocyanine skeleton
  • C09B 47/20 Obtaining compounds having sulfur atoms directly bound to the phthalocyanine skeleton
  • C09B 47/22 Obtaining compounds having nitrogen atoms directly bound to the phthalocyanine skeleton

Top Applicants

Top 10 applicants by patent filingsfor 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