Multilayer environmental barrier coatings
US-10351480-B2 · Jul 16, 2019 · US
Zirconium oxides or zirconates; Hafnium oxides or hafnates
Zirconium oxides or zirconates; Hafnium oxides or hafnates · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B41/5042 |
| Official title | {Zirconium oxides or zirconates; Hafnium oxides or hafnates} |
| Display label | Zirconium oxides or zirconates; Hafnium oxides or hafnates |
| Total patents | 197 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 8 |
| 2017 | 16 |
| 2018 | 18 |
| 2019 | 24 |
| 2020 | 20 |
| 2021 | 23 |
| 2022 | 13 |
| 2023 | 22 |
| 2024 | 18 |
| 2025 | 16 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for fabricating protective coating systems for gas turbine engine applications
US-2018346388-A1 · Dec 6, 2018 · US
Carbon-carbon composite including hydrophobic coating
US-10119585-B2 · Nov 6, 2018 · US
Method for protecting a hybrid ceramic structure from moisture attack in a high temperature environment
US-10112875-B2 · Oct 30, 2018 · US
Crucible materials
US-10107550-B2 · Oct 23, 2018 · US
Chemistry compatible coating material for advanced device on-wafer particle performance
US-2018269039-A1 · Sep 20, 2018 · US
Sintered ceramic protective layer formed by hot pressing
US-2018251406-A1 · Sep 6, 2018 · US
Process for providing a defined surface topography to at least a portion of a ceramic body
US-10040727-B2 · Aug 7, 2018 · US
Chemistry compatible coating material for advanced device on-wafer particle performance
US-10020170-B2 · Jul 10, 2018 · US
Sanitary ware having photocatalyst layer
US-10010865-B2 · Jul 3, 2018 · US
Systems and methods for carbon structures incorporating silicon carbide whiskers
US-10000425-B2 · Jun 19, 2018 · US
Process for preparing a body having an osseointegrative topography formed on its surface
US-2018104026-A1 · Apr 19, 2018 · US
Hot corrosion-resistant coatings and components protected therewith
US-9945036-B2 · Apr 17, 2018 · US
Coated dental articles and related methods of manufacture
US-9943467-B2 · Apr 17, 2018 · US
Rare-earth oxide based erosion resistant coatings for semiconductor application
US-2018102237-A1 · Apr 12, 2018 · US
Articles having reduced expansion and hermetic environmental barrier coatings and methods for their manufacture
US-9938839-B2 · Apr 10, 2018 · US
Thermal barrier coating repair compositions and methods of use thereof
US-2018050964-A1 · Feb 22, 2018 · US
Articles for high temperature service and method for making
US-9869188-B2 · Jan 16, 2018 · US
Rare-earth oxide based erosion resistant coatings for semiconductor application
US-9865434-B2 · Jan 9, 2018 · US
Protecting parts made of carbon-containing composite material from oxidation
US-2017369714-A1 · Dec 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B41/5042?
- CPC C04B41/5042 is the Cooperative Patent Classification code for “Zirconium oxides or zirconates; Hafnium oxides or hafnates.”
- How many patents are filed under CPC C04B41/5042 (Zirconium oxides or zirconates; Hafnium oxides or hafnates)?
- Our database includes 197 publications tagged with this CPC code.
- Is patent activity under CPC C04B41/5042 growing?
- Publication counts under this code: 18 in 2024 vs 16 in 2025 (latest complete years).