IPIQ

HUMAN NECESSITIES

A23

FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES

A23B

PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES

9/00

Preservation of edible seeds, e.g. cereals

A23B9/16

Preserving with chemicals

A23B9/18

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

A23B9/22

in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O