Method of producing catalyst, catalyst, and fuel cell
US-2023387420-A1 · Nov 30, 2023 · US
porous substrates
porous substrates · 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 | C23C18/1644 |
| Official title | {porous substrates} |
| Display label | porous substrates |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 8 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 8 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Copper filter with fast virus killing ability
US-2023284628-A1 · Sep 14, 2023 · US
Antimicrobial and antiviral treatments of materials
US-2023284629-A1 · Sep 14, 2023 · US
Electroless plated fiber material, manufacturing method, and manufacturing system therefor
US-2023160139-A1 · May 25, 2023 · US
Metal material and method for manufacturing metal material
US-2023090510-A1 · Mar 23, 2023 · US
Metal-coated reactive powders and methods for making the same
US-11542605-B1 · Jan 3, 2023 · US
Metal-cnt composite, production method and materials therefor
US-2022363542-A1 · Nov 17, 2022 · US
Production process for highly conducting and oriented graphene film
US-11469009-B2 · Oct 11, 2022 · US
Metal porous body
US-11466343-B2 · Oct 11, 2022 · US
Method for metallising a porous structure made of carbon material
US-11427915-B2 · Aug 30, 2022 · US
Method for preparing a polymer membrane for a polymer electrolyte water electrolyser
US-2022251721-A1 · Aug 11, 2022 · US
Method for manufacturing structure
US-2022165619-A1 · May 26, 2022 · US
Printed circuit nanofiber web manufacturing method
US-11324123-B2 · May 3, 2022 · US
Method for producing plated component, plated component, catalytic activity inhibitor and composite material for electroless plating
US-11310918-B2 · Apr 19, 2022 · US
Electrode for battery and fabrication method thereof
US-11211606-B2 · Dec 28, 2021 · US
Method for making composite structure with porous metal
US-11192337-B2 · Dec 7, 2021 · US
Additive manufacturing compositions and methods for the same
US-2021284830-A1 · Sep 16, 2021 · US
Method for producing plated component, plated component, catalytic activity inhibitor and composite material for electroless plating
US-2021235587-A1 · Jul 29, 2021 · US
Nanocomposite magnetic materials for magnetic devices and systems
US-11062826-B2 · Jul 13, 2021 · US
Method for fabricating nanoporous polymer thin film and corresponding method for fabricating nanoporous thin film
US-11059205-B2 · Jul 13, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C18/1644?
- CPC C23C18/1644 is the Cooperative Patent Classification code for “porous substrates.”
- How many patents are filed under CPC C23C18/1644 (porous substrates)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC C23C18/1644 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).