Top IPC subclasses
|
1
|
C01B
|
1
|
non-metallic elementscompounds thereof
|
|
2
|
A23D
|
1
|
edible oils or fats, e.g. margarines, shortenings, cooking oils
|
|
3
|
A23L
|
1
|
Foods, foodstuffs, or non-alcoholic beverages, not covered by subclasses A21D or A23B-A23J; their preparation or treatment, e.g. cooking, modification of nutritive qualities, physical treatment; preservation of foods or foodstuffs, in general
|