Pre-treatments of a coated or not coated substrate other than oxidation treatment in order to form an active joining layer

Pre-treatments of a coated or not coated substrate other than oxidation treatment in order to form an active joining layer · 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 codeC04B2237/55
Official titlePre-treatments of a coated or not coated substrate other than oxidation treatment in order to form an active joining layer
Display labelPre-treatments of a coated or not coated substrate other than oxidation treatment in order to form an active joining layer
Total patents79

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
20156
201610
201710
20187
20196
20209
20217
20228
20235
20247
20253
20261

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 C04B2237/55?
CPC C04B2237/55 is the Cooperative Patent Classification code for “Pre-treatments of a coated or not coated substrate other than oxidation treatment in order to form an active joining layer.”
How many patents are filed under CPC C04B2237/55 (Pre-treatments of a coated or not coated substrate other than oxidation treatment in order to form an active joining layer)?
Our database includes 79 publications tagged with this CPC code.
Is patent activity under CPC C04B2237/55 growing?
Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).