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IPC Subgroup
C01F 5/14

Magnesium hydroxide

Introduced: September 1968

Last revised: January 2006

Full Title

Compounds of magnesium > Magnesium hydroxide

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

3 direct subcodes

Child Classifications

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  • C01F 5/16 by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium
  • C01F 5/2 by precipitation from solutions of magnesium salts with ammonia
  • C01F 5/22 from magnesium compounds with alkali hydroxides or alkaline earth oxides or hydroxides

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