using particle {beam} bombardment, e.g. ionisers

using particle {beam} bombardment, e.g. ionisers · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH01J27/20
Official titleusing particle {beam} bombardment, e.g. ionisers
Display labelusing particle {beam} bombardment, e.g. ionisers
Total patents27

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20162
20172
20184
20194
20204
20215
20223
20231
20241
20251

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC H01J27/20?
CPC H01J27/20 is the Cooperative Patent Classification code for “using particle {beam} bombardment, e.g. ionisers.”
How many patents are filed under CPC H01J27/20 (using particle {beam} bombardment, e.g. ionisers)?
Our database includes 27 publications tagged with this CPC code.
Is patent activity under CPC H01J27/20 growing?
Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).