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IPC Subgroup
C01F 7/784

Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions

Introduced: January 2022

Full Title

Compounds of aluminium > Compounds containing aluminium, with or without oxygen or hydrogen, and containing two or more other elements > Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
INORGANIC CHEMISTRY
Subclass:
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS

Filing statistics

IPC C01F 7/784 belongs to the parent subclass C01F, which recorded 36,684 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,787 in 2013 to 3,525 in 2023 (+26%), peaking at 3,703 applications in 2017. The most active applicants in class C01 are CHINESE ACADEMY OF SCIENCES (5,794 applications), SINOPEC (CHINA PETROCHEMICAL CORPORATION) (3,286 applications) and LG CHEM (2,689 applications).

Source: EPO PATSTAT, worldwide filings

1 direct subcode

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class C01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 5,794
  2. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 3,286
  3. LG CHEM KR 2,689
  4. BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,669
  5. CENTRAL SOUTH UNIVERSITY 1,531
  6. KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 1,252
  7. SUMITOMO METAL MINING COMPANY JP 1,073
  8. ZHEJIANG UNIVERSITY 1,061
  9. PANASONIC INTELLECTUAL PROPERTY JP 1,058
  10. PANASONIC INTELLECTUAL PROPERTY 1,038