Method for manufacturing catalyst having supported catalyst particles of core/shell structure
US-10497942-B2 · Dec 3, 2019 · US
Removal of gases or vapours {; Gas or pressure control}
Removal of gases or vapours {; Gas or pressure control} · 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 | C25D21/04 |
| Official title | Removal of gases or vapours {; Gas or pressure control} |
| Display label | Removal of gases or vapours {; Gas or pressure control} |
| Total patents | 183 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 14 |
| 2017 | 15 |
| 2018 | 11 |
| 2019 | 21 |
| 2020 | 14 |
| 2021 | 7 |
| 2022 | 22 |
| 2023 | 26 |
| 2024 | 24 |
| 2025 | 14 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Leak checking method, leak checking apparatus, electroplating method, and electroplating apparatus
US-10458036-B2 · Oct 29, 2019 · US
Flow Assisted Dynamic Seal for High-Convection, Continuous-Rotation Plating
US-2019264347-A1 · Aug 29, 2019 · US
Systems and methods for copper (i) suppression in electrochemical deposition
US-2019237335-A1 · Aug 1, 2019 · US
Electroplating system and pressure device thereof
US-2019186037-A1 · Jun 20, 2019 · US
Systems, methods, and anodes for enhanced ionic liquid bath plating of turbomachine components and other workpieces
US-2019177866-A1 · Jun 13, 2019 · US
Systems, methods, and anodes for enhanced ionic liquid bath plating of turbomachine components and other workpieces
US-10240245-B2 · Mar 26, 2019 · US
One-piece electroformed metal component
US-10214831-B2 · Feb 26, 2019 · US
Apparatuses and methods for maintaining pH in nickel electroplating baths
US-10190232-B2 · Jan 29, 2019 · US
Method of modifying a sample surface layer from a microscopic sample
US-10105734-B2 · Oct 23, 2018 · US
Method of producing transdermal absorption sheet
US-2018222088-A1 · Aug 9, 2018 · US
Electroplating systems and methods
US-2018171500-A1 · Jun 21, 2018 · US
Plating apparatus, plating method and computer readable recording medium
US-2018171501-A1 · Jun 21, 2018 · US
Bubble collector guide and use thereof
US-9976222-B2 · May 22, 2018 · US
Leak checking method, leak checking apparatus, electroplating method, and electroplating apparatus
US-2018135198-A1 · May 17, 2018 · US
Wetting pretreatment for enhanced damascene metal filling
US-2018138044-A1 · May 17, 2018 · US
Film formation system and film formation method for forming metal film
US-9909226-B2 · Mar 6, 2018 · US
Configuration and method of operation of an electrodeposition system for improved process stability and performance
US-2018038007-A1 · Feb 8, 2018 · US
Method for producing catalyst wherein catalyst particles having core/shell structure are supported
US-2018034062-A1 · Feb 1, 2018 · US
Methods and apparatus for wetting pretreatment for through resist metal plating
US-2018023209-A1 · Jan 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25D21/04?
- CPC C25D21/04 is the Cooperative Patent Classification code for “Removal of gases or vapours {; Gas or pressure control}.”
- How many patents are filed under CPC C25D21/04 (Removal of gases or vapours {; Gas or pressure control})?
- Our database includes 183 publications tagged with this CPC code.
- Is patent activity under CPC C25D21/04 growing?
- Publication counts under this code: 24 in 2024 vs 14 in 2025 (latest complete years).