This page is not indexed by search engines while we improve data quality.

Pyrosulfites or metabisulfites

Pyrosulfites or metabisulfites · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	C01D5/145
Official title	{Pyrosulfites or metabisulfites}
Display label	Pyrosulfites or metabisulfites
Total patents	2

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

Filing activity appears stable based on the most recent years.

Patents filed per year
Year	Patents
2022	1
2025	1

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.