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DIFF Main Group
C01D 9/00

Nitrates of sodium, potassium or alkali metals in general

Introduced: September 1968

Title

Titles differ between systems:

IPC: Nitrates of sodium, potassium, or alkali metals in general

CPC: Nitrates of sodium, potassium or alkali metals in general

Full Title

Full titles differ between systems:

IPC:

Nitrates of sodium, potassium, or alkali metals in general

CPC:

Nitrates of sodium, potassium or alkali metals in general

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

Child Classifications

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  • C01D 9/02 Preparation by working-up natural salt mixtures IPC+CPC Available in IPC and CPC
  • C01D 9/04 Preparation with liquid nitric acid IPC+CPC Available in IPC and CPC
  • C01D 9/06 Preparation with gaseous nitric acid or nitrogen oxides IPC+CPC Available in IPC and CPC
  • C01D 9/16 Purification IPC+CPC Available in IPC and CPC
  • C01D 9/18 Preparation in the form of shaped products, e.g. granules IPC+CPC Available in IPC and CPC
  • C01D 9/20 Preventing the absorption of moisture or caking IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class C01,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 4,293
  2. LG CHEM KR 3,317
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,219
  4. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,154
  5. OMYA INTERNATIONAL CH 1,524
  6. PANASONIC INTELLECTUAL PROPERTY JP 1,362
  7. SAUDI ARABIAN OIL COMPANY SA 1,298
  8. SUMITOMO METAL MINING COMPANY JP 1,286
  9. CENTRAL SOUTH UNIVERSITY 1,243
  10. L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,238