Shape memory effect

Shape memory effect · 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 codeC21D2201/01
Official titleShape memory effect
Display labelShape memory effect
Total patents59

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20155
20167
20176
20184
201912
20209
20213
20223
20237
20242
20251

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 C21D2201/01?
CPC C21D2201/01 is the Cooperative Patent Classification code for “Shape memory effect.”
How many patents are filed under CPC C21D2201/01 (Shape memory effect)?
Our database includes 59 publications tagged with this CPC code.
Is patent activity under CPC C21D2201/01 growing?
Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).