with two hetero atoms in positions 1,3

with two hetero atoms in positions 1,3 · Cooperative Patent Classification (CPC)

Agriculture, food, personal care, health, and life sciences.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeA01N43/28
Official titlewith two hetero atoms in positions 1,3
Display labelwith two hetero atoms in positions 1,3
Total patents85

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
201514
201612
20178
20188
20195
20205
20215
20225
20238
20246
20255
20264

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 A01N43/28?
CPC A01N43/28 is the Cooperative Patent Classification code for “with two hetero atoms in positions 1,3.”
How many patents are filed under CPC A01N43/28 (with two hetero atoms in positions 1,3)?
Our database includes 85 publications tagged with this CPC code.
Is patent activity under CPC A01N43/28 growing?
Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).