Clay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00)

Clay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00) · 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 codeC04B33/00
Official titleClay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00)
Display labelClay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00)
Total patents60

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
201613
20179
201810
20195
20206
20215
20221
20233
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 C04B33/00?
CPC C04B33/00 is the Cooperative Patent Classification code for “Clay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00).”
How many patents are filed under CPC C04B33/00 (Clay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00))?
Our database includes 60 publications tagged with this CPC code.
Is patent activity under CPC C04B33/00 growing?
Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).