IPC Subgroup
C07C 27/26 Purification; Separation; Stabilisation
Introduced: September 1968
Last revised: January 2006
Full Title
Processes involving the simultaneous production of more than one class of oxygen-containing compounds > Purification; Separation; Stabilisation
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- ACYCLIC OR CARBOCYCLIC COMPOUNDS
Related Keywords
purification or separation of CARBOXYLIC or salts, halides, anhydrides, derivatives or esters thereofstabilisation of CARBOXYLIC or salts, halides, anhydrides, derivatives or esters thereofpurification, separation or stabilisation of PHENOLS
2 direct subcodes
Child Classifications
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- C07C 27/28 by distillation
- C07C 27/34 by extraction
Top Applicants
Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 12,697
- ROCHE CH 11,347
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
- NOVARTIS CH 9,356
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
- BRISTOL-MYERS SQUIBB COMPANY US 7,320
- LG CHEM KR 7,245
- REGENERON PHARMACEUTICALS US 6,816
- HARVARD UNIVERSITY US 6,190
- GENENTECH US 5,922