| 1/00 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites |
| 1/02 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from meat |
| 1/04 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from fish or other sea animals |
| 1/06 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from blood |
| 1/08 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from eggs |
| 1/09 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from eggs separating yolks from whites |
| 1/10 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from hair, feathers, horn, skins, leather, bones, or the like |
| 1/12 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from cereals, wheat, bran, or molasses |
| 1/14 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from leguminous or other vegetable seeds; from press-cake or oil-bearing seeds |
| 1/16 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from waste water of starch-manufacturing plant or like wastes |
| 1/18 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from yeasts |
| 1/20 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from milk, e.g. casein (curds or cheese A23C); from whey |
| 1/22 | Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from milk, e.g. casein (curds or cheese A23C); from whey Drying casein |
| 3/00 | Working-up of proteins for foodstuffs |
| 3/04 | Working-up of proteins for foodstuffs Animal proteins |
| 3/06 | Working-up of proteins for foodstuffs Animal proteins Gelatine |
| 3/08 | Working-up of proteins for foodstuffs Animal proteins Dairy proteins |
| 3/10 | Working-up of proteins for foodstuffs Animal proteins Dairy proteins Casein (drying casein A23J 1/22) |
| 3/12 | Working-up of proteins for foodstuffs Animal proteins from blood |
| 3/14 | Working-up of proteins for foodstuffs Vegetable proteins |