Section A: Human Necessities
16
Classes
86
Subclasses
1,282
Main Groups
9,906
IPC
29,967
CPC
Description
Section A encompasses technologies and inventions directly related to fundamental human needs, including food, beverages, tobacco, personal hygiene, healthcare, clothing, and shelter. It covers agricultural processes, food preparation and preservation, medical treatments and devices, pharmaceuticals, and domestic appliances. This broad section serves as the foundation for classifying inventions that improve human welfare, sustenance, and quality of life across diverse industries from agriculture to medicine to consumer goods.
Visualizations
Size of each class by number of subgroups
| Class | Title | Descendants |
|---|---|---|
| A01 | AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING | 3,024 |
| A21 | BAKING; EDIBLE DOUGHS | 282 |
| A22 | BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH | 239 |
| A23 | FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES | 2,110 |
| A24 | TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES | 442 |
| A41 | WEARING APPAREL | 647 |
| A42 | HEADWEAR | 149 |
| A43 | FOOTWEAR | 717 |
| A44 | HABERDASHERY; JEWELLERY | 400 |
| A45 | HAND OR TRAVELLING ARTICLES | 849 |
| A46 | BRUSHWARE | 262 |
| A47 | FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL | 3,705 |
| A61 | MEDICAL OR VETERINARY SCIENCE; HYGIENE | 13,557 |
| A62 | LIFE-SAVING; FIRE-FIGHTING | 335 |
| A63 | SPORTS; GAMES; AMUSEMENTS | 3,526 |
| A99 | SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION | 2 |
Classification entries by hierarchy level
Child Classifications
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- A01 AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A21 BAKING; EDIBLE DOUGHS
- A22 BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
- A23 FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A24 TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A41 WEARING APPAREL
- A42 HEADWEAR
- A43 FOOTWEAR
- A44 HABERDASHERY; JEWELLERY
- A45 HAND OR TRAVELLING ARTICLES
- A46 BRUSHWARE
- A47 FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A61 MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A62 LIFE-SAVING; FIRE-FIGHTING
- A63 SPORTS; GAMES; AMUSEMENTS
- A99 SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION