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DIFF Subgroup
A62D 3/30

by reacting with chemical agents

Introduced: January 2007

Full Title

Full titles differ between systems:

IPC:

Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances > by reacting with chemical agents

CPC:

Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances (consuming noxious gases by combustion F23G7/06) > by reacting with chemical agents

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

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2007.

Child Classifications

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  • A62D 3/32 by treatment in molten chemical reagent, e.g. salts or metals since 2007 IPC+CPC Available in IPC and CPC
  • A62D 3/33 by chemical fixing the harmful substance, e.g. by chelation or complexation since 2007 IPC+CPC Available in IPC and CPC
  • A62D 3/34 Dehalogenation using reactive chemical agents able to degrade since 2007 IPC+CPC Available in IPC and CPC
  • A62D 3/35 by hydrolysis since 2007 IPC+CPC Available in IPC and CPC
  • A62D 3/36 Detoxification by using acid or alkaline reagents since 2007 IPC+CPC Available in IPC and CPC
  • A62D 3/37 by reduction, e.g. hydrogenation since 2007 IPC+CPC Available in IPC and CPC
  • A62D 3/38 by oxidation; by combustion since 2007 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class A62,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 1,604
  2. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,202
  3. TYCO FIRE PRODUCTS US 906
  4. NOHMI BOSAI 429
  5. LG ENERGY SOLUTION KR 414
  6. HOCHIKI CORPORATION 408
  7. HUBEI JI'ANDUN FIRE-FIGHTING TECHNOLOGY COMPANY 374
  8. HONEYWELL INTERNATIONAL US 355
  9. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 346
  10. FISHER AND PAYKEL HEALTHCARE NZ 305

Top Applicants (CPC)

Class A62,2013–2023, worldwide · Source: EPO PATSTAT

  1. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,384
  2. TYCO FIRE PRODUCTS US 962
  3. SGCC(STATE GRID CORPORATION OF CHINA) 662
  4. LG ENERGY SOLUTION KR 519
  5. HONEYWELL INTERNATIONAL US 427
  6. DRAEGER SAFETY AG & CO. KGAA DE 332
  7. VICTAULIC COMPANY US 294
  8. HILTI LI 265
  9. KIDDE TECHNOLOGIES US 245
  10. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) 240