in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O

Introduced: January 2025

Title

Titles differ between systems:

IPC: in a controlled atmosphere, e.g. partial vacuum, comprising only CO, N, O or HO

CPC: in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O

Full Title

Full titles differ between systems:

IPC:

Preservation of foods or foodstuffs, in general > by treatment with chemicals > in the form of gases, e.g. fumigation; Compositions or apparatus therefor > in a controlled atmosphere, e.g. partial vacuum, comprising only CO, N, O or HO

CPC:

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2025.

Child Classifications

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A23B 2/712 in which an absorbent is placed or used (packages for foodstuffs with provision for absorbing fluids B65D81/26) since 2025 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

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

Top Applicants (CPC)

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

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