Expansion of ring D by one atom, e.g. D homo steroids

Expansion of ring D by one atom, e.g. D homo steroids · 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 codeC07J63/008
Official title{Expansion of ring D by one atom, e.g. D homo steroids}
Display labelExpansion of ring D by one atom, e.g. D homo steroids
Total patents240

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
201530
201613
201722
201827
201925
202017
202124
202219
202326
202415
202517
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 C07J63/008?
CPC C07J63/008 is the Cooperative Patent Classification code for “Expansion of ring D by one atom, e.g. D homo steroids.”
How many patents are filed under CPC C07J63/008 (Expansion of ring D by one atom, e.g. D homo steroids)?
Our database includes 240 publications tagged with this CPC code.
Is patent activity under CPC C07J63/008 growing?
Publication counts under this code: 15 in 2024 vs 17 in 2025 (latest complete years).