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IPC Subgroup
C07C 17/38

Separation; Purification; Stabilisation; Use of additives

Introduced: September 1968

Last revised: January 2006

Full Title

Preparation of halogenated hydrocarbons > Separation; Purification; Stabilisation; Use of additives

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ORGANIC CHEMISTRY
Subclass:
ACYCLIC OR CARBOCYCLIC COMPOUNDS

Related Keywords

purification or separation of halogenated hydrocarbons

5 direct subcodes

Child Classifications

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  • C07C 17/389 by adsorption on solids
  • C07C 17/392 by crystallisation; Purification or separation of the crystals
  • C07C 17/395 by treatment giving rise to a chemical modification of at least one compound
  • C07C 17/42 Use of additives, e.g. for stabilisation

Top Applicants

Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 12,697
  2. ROCHE CH 11,347
  3. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
  4. NOVARTIS CH 9,356
  5. BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
  6. BRISTOL-MYERS SQUIBB COMPANY US 7,320
  7. LG CHEM KR 7,245
  8. REGENERON PHARMACEUTICALS US 6,816
  9. HARVARD UNIVERSITY US 6,190
  10. GENENTECH US 5,922