Esters, e.g. lactones

Esters, e.g. lactones · 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 codeC04B24/045
Official title{Esters, e.g. lactones}
Display labelEsters, e.g. lactones
Total patents68

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
201510
20167
20178
20186
201910
20205
20216
20224
20233
20246
20253

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 C04B24/045?
CPC C04B24/045 is the Cooperative Patent Classification code for “Esters, e.g. lactones.”
How many patents are filed under CPC C04B24/045 (Esters, e.g. lactones)?
Our database includes 68 publications tagged with this CPC code.
Is patent activity under CPC C04B24/045 growing?
Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).