Esters of inorganic acids

Esters of inorganic acids · 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 codeC08L1/16
Official titleEsters of inorganic acids
Display labelEsters of inorganic acids
Total patents79

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
20154
20161
20172
20185
20193
202011
202114
202211
202311
202410
20256
20261

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 C08L1/16?
CPC C08L1/16 is the Cooperative Patent Classification code for “Esters of inorganic acids.”
How many patents are filed under CPC C08L1/16 (Esters of inorganic acids)?
Our database includes 79 publications tagged with this CPC code.
Is patent activity under CPC C08L1/16 growing?
Publication counts under this code: 10 in 2024 vs 6 in 2025 (latest complete years).