of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member

of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB25D9/04
Official titleof the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
Display labelof the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
Total patents53

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20151
20164
20177
20186
20198
20202
20214
20224
20236
20245
20253
20263

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 B25D9/04?
CPC B25D9/04 is the Cooperative Patent Classification code for “of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member.”
How many patents are filed under CPC B25D9/04 (of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member)?
Our database includes 53 publications tagged with this CPC code.
Is patent activity under CPC B25D9/04 growing?
Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).