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IPC Subgroup
C09F 1/04

Chemical modification, e.g. esterification

Introduced: September 1968

Last revised: January 2006

Full Title

Obtaining, purification, or chemical modification of natural resins, e.g. oleo-resins > Chemical modification, e.g. esterification

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
Subclass:
NATURAL RESINS; FRENCH POLISH; DRYING-OILS; OIL DRYING AGENTS, i.e. SICCATIVES; TURPENTINE

Filing statistics

IPC C09F 1/04 belongs to the parent subclass C09F, which recorded 1,677 patent applications worldwide between 2013 and 2023. Annual filings declined from 166 in 2013 to 90 in 2023 (-46%), peaking at 317 applications in 2016. The most active applicants in class C09 are LG CHEM (6,420 applications), NITTO DENKO CORPORATION (5,752 applications) and HALLIBURTON ENERGY SERVICES GROUP (5,650 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor 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