THE TECHNOLOGY DIRECTORYFree to explore
Find the technology.
Follow your curiosity.
Explore the categories behind patent research. Start with a subject, find its official classification, and follow the details.
A place for every line of inquiry.
Browse the nine CPC sectionsABCDEFGHY
Health & everyday life
Human necessities
Making & moving
Performing operations; transporting
Chemistry & materials
Chemistry; metallurgy
Textiles & paper
Textiles; paper
Built environment
Fixed constructions
Mechanical systems
Mechanical engineering; lighting; heating; weapons; blasting
Physics & computing
Physics
Electricity
Electricity
Emerging & cross-sector technology
General tagging of new technological developments; cross-sectional technologies
THE SOURCE BEHIND THE DIRECTORY
Take the directory with you.All codes, titles & parent categoriesCSV in ZIP · 6.3 MB · Edition 2026.08A shared language for technology.
CPC codes organize patent publications by technical subject. We preserve the official titles and their hierarchy. Some titles need the context of their parent category; the publisher’s scheme includes the full notes and definitions.
Official scheme & definitions