by change in the physical state, e.g. crystallisation

by change in the physical state, e.g. crystallisation · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC07C67/52
Official titleby change in the physical state, e.g. crystallisation
Display labelby change in the physical state, e.g. crystallisation
Total patents88

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20153
20168
20173
20185
201910
202012
20218
202211
20236
20247
202513
20262

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 C07C67/52?
CPC C07C67/52 is the Cooperative Patent Classification code for “by change in the physical state, e.g. crystallisation.”
How many patents are filed under CPC C07C67/52 (by change in the physical state, e.g. crystallisation)?
Our database includes 88 publications tagged with this CPC code.
Is patent activity under CPC C07C67/52 growing?
Publication counts under this code: 7 in 2024 vs 13 in 2025 (latest complete years).