| 3/00 | Tea; Tea substitutes; Preparations thereof |
| 3/06 | Tea; Tea substitutes; Preparations thereof Treating tea before extraction (reducing or removing alkaloid content A23F 3/36); Preparations produced thereby (tea extract preparations A23F 3/16) |
| 3/08 | Tea; Tea substitutes; Preparations thereof Treating tea before extraction (reducing or removing alkaloid content A23F 3/36); Preparations produced thereby (tea extract preparations A23F 3/16) Oxidation; Fermentation |
| 3/10 | Tea; Tea substitutes; Preparations thereof Treating tea before extraction (reducing or removing alkaloid content A23F 3/36); Preparations produced thereby (tea extract preparations A23F 3/16) Oxidation; Fermentation Fermentation with addition of micro-organisms or enzymes |
| 3/12 | Tea; Tea substitutes; Preparations thereof Treating tea before extraction (reducing or removing alkaloid content A23F 3/36); Preparations produced thereby (tea extract preparations A23F 3/16) Rolling or shredding tea leaves |
| 3/14 | Tea; Tea substitutes; Preparations thereof Treating tea before extraction (reducing or removing alkaloid content A23F 3/36); Preparations produced thereby (tea extract preparations A23F 3/16) Tea preparations, e.g. using additives (flavouring A23F 3/4) |
| 3/16 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea |
| 3/18 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Extraction of water soluble tea constituents (isolation of tea flavour or tea oil A23F 3/42) |
| 3/20 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Removing unwanted substances (reducing or removing alkaloid content A23F 3/38) |
| 3/22 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Drying or concentrating tea extract |
| 3/24 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Drying or concentrating tea extract by freezing out the water |
| 3/26 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Drying or concentrating tea extract by lyophilisation |
| 3/28 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Drying or concentrating tea extract by spraying into a gas stream |
| 3/30 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Further treatment of dried tea extract; Preparations produced thereby, e.g. instant tea (flavouring A23F 3/4) |
| 3/32 | Tea; Tea substitutes; Preparations thereof Tea extraction; Tea extracts; Treating tea extract; Making instant tea Further treatment of dried tea extract; Preparations produced thereby, e.g. instant tea (flavouring A23F 3/4) Agglomerating, flaking or tabletting |
| 3/34 | Tea; Tea substitutes; Preparations thereof Tea substitutes, e.g. mate; Extracts or infusions thereof |
| 3/36 | Tea; Tea substitutes; Preparations thereof Reducing or removing alkaloid content; Preparations produced thereby; Extracts or infusions thereof |
| 3/38 | Tea; Tea substitutes; Preparations thereof Reducing or removing alkaloid content; Preparations produced thereby; Extracts or infusions thereof Reducing or removing alkaloid content from tea extract |
| 3/40 | Tea; Tea substitutes; Preparations thereof Tea flavour; Tea oil; Flavouring of tea or tea extract (synthetic tea flavours A23L 1/226) |
| 3/42 | Tea; Tea substitutes; Preparations thereof Tea flavour; Tea oil; Flavouring of tea or tea extract (synthetic tea flavours A23L 1/226) Isolation of tea flavour or tea oil |