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IPC Subgroup
C01D 9/1

with ammonium nitrate

Introduced: September 1968

Last revised: January 2006

Full Title

Nitrates of sodium, potassium, or alkali metals in general > Preparation by double decomposition > with ammonium nitrate

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
INORGANIC CHEMISTRY
Subclass:
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM

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