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Technology Heat Map

Patenting intensity across 34 WIPO technology fields (9.1M US grants, USPTO/PatentsView) and CPC sections across six offices (US · EP · WO · CN · JP · KR, 114M+ publications). Each row is normalized to its own peak year — dark cells are that field's hottest years. Hover or tap any cell for exact counts; click a field name to pin its trend line.

US patenting heat by WIPO field, 1995–2024

Field 959697989900010203040506070809101112131415161718192021222324
Electrical engineering
Audio-visual technology
Basic communication processes
Computer technology
Digital communication
Electrical machinery, apparatus, energy
IT methods for management
Semiconductors
Telecommunications
Chemistry
Basic materials chemistry
Biotechnology
Chemical engineering
Environmental technology
Food chemistry
Macromolecular chemistry, polymers
Materials, metallurgy
Micro-structural and nano-technology
Organic fine chemistry
Pharmaceuticals
Surface technology, coating
Other fields
Civil engineering
Furniture, games
Other consumer goods
Instruments
Control
Measurement
Medical technology
Optics
Mechanical engineering
Engines, pumps, turbines
Handling
Machine tools
Mechanical elements
Other special machines
Textile and paper machines
Thermal processes and apparatus
Transport

Six-office publication volume by CPC section

DOCDB five offices (EP/WO/CN/JP/KR) + US grants, per publication year.

A B C D E F G H Y 1995 2024
A — Human necessitiesB — Operations & transportC — Chemistry & metallurgyD — Textiles & paperE — Fixed constructionsF — Mechanical engineeringG — Physics & computingH — Electricity & electronicsY — Cross-sectional (climate etc.)

Fastest accelerating & declining fields (2023, CPC subclass level)

Acceleration = recent 3-year CAGR minus prior 3-year CAGR, fields with ≥ 2,000 publications. Full subclass-level index (700+ fields × 45 years, citation velocity, emerging signals) is in the paid dataset.

Accelerating

CPCPubs 20233y CAGRAccel.
Y02W 175,872 +72.6% +60.5pp
Y02P 518,970 +62.5% +54.5pp
Y02A 348,133 +66.4% +53.3pp
Y02D 203,529 +67.7% +43.9pp
Y02T 189,359 +32.5% +25.3pp
Y02B 108,052 +30.5% +24.3pp
C05G 4,069 -5.1% +22.3pp
Y02E 445,854 +29.7% +20.9pp
C10N 3,482 +4.6% +19.1pp
A01P 9,524 +100.3% +18pp

Declining

CPCPubs 20233y CAGRAccel.
G16Y 5,131 +46.1% -117.4pp
G06N 161,546 +28.1% -60.1pp
E01F 3,730 -11.4% -37.4pp
B65F 2,639 -13.2% -33.7pp
B31B 2,667 -2.2% -33pp
E03F 4,303 -6.7% -30.4pp
E01H 2,117 -12.6% -28.5pp
B07B 7,723 -3% -27.3pp
B64F 5,013 +0.3% -27.2pp
B07C 7,281 +6.7% -26.5pp

Want the full analytics?

The Patent Technology Analytics dataset ships the subclass-level acceleration index, cross-office technology flow matrices (who cites whom across CN↔US↔EP↔JP↔KR), company influence rankings and emerging-technology early signals — with full methodology and per-figure provenance. From $299, one-time.

Sources: USPTO PatentsView 2024 final (CC BY 4.0) · EPO DOCDB derived aggregate tables. Edition 2026-08-06.