IPC Subgroup
A23F 3/08 Oxidation; Fermentation
Introduced: January 1980
Last revised: January 2006
Full Title
Tea; Tea substitutes; Preparations thereof > Treating tea before extraction; Preparations produced thereby > Oxidation; Fermentation
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; PREPARATION, TREATMENT OR PRESERVATION THEREOF
- Subclass:
- COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
1 direct subcode
Child Classifications
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- A23F 3/1 Fermentation with addition of microorganisms or enzymes