Treatment with inorganic compounds

Treatment with inorganic compounds · 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 codeC09C1/3653
Official title{Treatment with inorganic compounds}
Display labelTreatment with inorganic compounds
Total patents52

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
201511
20164
20172
20182
20197
20206
20214
20224
20235
20246
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 C09C1/3653?
CPC C09C1/3653 is the Cooperative Patent Classification code for “Treatment with inorganic compounds.”
How many patents are filed under CPC C09C1/3653 (Treatment with inorganic compounds)?
Our database includes 52 publications tagged with this CPC code.
Is patent activity under CPC C09C1/3653 growing?
Publication counts under this code: 6 in 2024 vs 1 in 2025 (latest complete years).