PatentsDB

from waste materials

from waste materials · 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 codeC22B21/0023
Official title{from waste materials}
Display labelfrom waste materials
Total patents76

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20151
20161
20173
20183
20194
20209
20212
20223
202318
202418
20259
20265

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 C22B21/0023?
CPC C22B21/0023 is the Cooperative Patent Classification code for “from waste materials.”
How many patents are filed under CPC C22B21/0023 (from waste materials)?
Our database includes 76 publications tagged with this CPC code.
Is patent activity under CPC C22B21/0023 growing?
Publication counts under this code: 18 in 2024 vs 9 in 2025 (latest complete years).