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PCE
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DIFF Subgroup
A23B 9/18

in the form of gases, e.g. fumigation; Compositions or apparatus therefor

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Preservation of edible seeds, e.g. cereals > Preserving with chemicals > in the form of gases, e.g. fumigation; Compositions or apparatus therefor

CPC:

Preservation of edible seeds, e.g. cereals (preservation of pulses A23B75/00) > Preserving with chemicals > in the form of gases, e.g. fumigation; Compositions or apparatus therefor

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

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  • A23B 9/20 in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O since 1990 IPC+CPC Available in IPC and CPC
  • A23B 9/22 in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O since 1990 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class A23,2013–2023, worldwide · Source: EPO PATSTAT

  1. KVASENKOV OLEG IVANOVICH RU 6,158
  2. NESTLE CH 4,562
  3. NESTEC CH 3,354
  4. JIANGNAN UNIVERSITY 2,699
  5. DSM IP ASSETS (DUTCH STATE MINES IP ASSETS) NL 2,320
  6. SUNTORY HOLDINGS JP 1,926
  7. CHINESE ACADEMY OF SCIENCES 1,804
  8. CJ CHEILJEDANG CORPORATION KR 1,653
  9. CARGILL US 1,588
  10. REPUBLIC OF KOREA (RURAL DEVELOPMENT ADMINISTRATION) KR 1,314

Top Applicants (CPC)

Class A23,2013–2023, worldwide · Source: EPO PATSTAT

  1. NESTLE CH 5,075
  2. NESTEC CH 3,916
  3. DSM IP ASSETS (DUTCH STATE MINES IP ASSETS) NL 2,558
  4. JIANGNAN UNIVERSITY 2,196
  5. SUNTORY HOLDINGS JP 2,133
  6. CJ CHEILJEDANG CORPORATION KR 1,842
  7. CARGILL US 1,708
  8. REPUBLIC OF KOREA (RURAL DEVELOPMENT ADMINISTRATION) KR 1,341
  9. CHINESE ACADEMY OF SCIENCES 1,279
  10. MARS US 1,161