Plastic component comprising a carbon filler
US-2018346384-A1 · Dec 6, 2018 · US
Carbon black
Carbon black · 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 | C04B2235/424 |
| Official title | Carbon black |
| Display label | Carbon black |
| Total patents | 181 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 23 |
| 2017 | 15 |
| 2018 | 25 |
| 2019 | 23 |
| 2020 | 18 |
| 2021 | 25 |
| 2022 | 8 |
| 2023 | 17 |
| 2024 | 4 |
| 2025 | 6 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Micropowder and method for manufacturing the same
US-10059631-B2 · Aug 28, 2018 · US
Systems and methods for carbon-carbon materials incorporating yttrium and zirconium compounds
US-2018231079-A1 · Aug 16, 2018 · US
Reinforced composites, methods of manufacture, and articles therefrom
US-2018229469-A1 · Aug 16, 2018 · US
Carbon yielding resin for melt infiltration
US-2018194690-A1 · Jul 12, 2018 · US
Method for producing conductive mayenite type compound
US-2018186650-A1 · Jul 5, 2018 · US
Process for producing reaction bonded silicon carbide member
US-9994487-B2 · Jun 12, 2018 · US
Micropowder and method for manufacturing the same
US-2018134625-A1 · May 17, 2018 · US
Reinforced composites, methods of manufacture, and articles therefrom
US-9962903-B2 · May 8, 2018 · US
Method of making polycrystalline diamond material
US-2017304995-A1 · Oct 26, 2017 · US
High density carbon-carbon friction materials
US-2017283330-A1 · Oct 5, 2017 · US
Composite for lithium air battery, method of preparing the composite, and lithium air battery employing positive electrode including the composite
US-9780386-B2 · Oct 3, 2017 · US
Method and apparatus for producing three-dimensionally shaped object and three-dimensionally shaped object
US-9738037-B2 · Aug 22, 2017 · US
Self-lubricating flexible carbon composite seal
US-9726300-B2 · Aug 8, 2017 · US
Functionally graded articles and methods of manufacture
US-9714709-B2 · Jul 25, 2017 · US
Porous electrode base material, method for manufacturing same, and precursor sheet
US-9716278-B2 · Jul 25, 2017 · US
Element For Ejecting Gas Into A Regenerator of a Fluid Catalytic Cracking Unit
US-2017203271-A1 · Jul 20, 2017 · US
Systems and methods for carbon-carbon materials incorporating yttrium and zirconium compounds
US-2017175833-A1 · Jun 22, 2017 · US
Carbon fiber preforms
US-2017151712-A1 · Jun 1, 2017 · US
Situ grown SiC coatings on carbon materials
US-9663374-B2 · May 30, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/424?
- CPC C04B2235/424 is the Cooperative Patent Classification code for “Carbon black.”
- How many patents are filed under CPC C04B2235/424 (Carbon black)?
- Our database includes 181 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/424 growing?
- Publication counts under this code: 4 in 2024 vs 6 in 2025 (latest complete years).