Method for manufacturing porous carbon sheet and porous carbon sheet
US-2024327221-A1 · Oct 3, 2024 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C01P2004/20 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 778 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 45 |
| 2016 | 48 |
| 2017 | 54 |
| 2018 | 47 |
| 2019 | 81 |
| 2020 | 79 |
| 2021 | 76 |
| 2022 | 89 |
| 2023 | 83 |
| 2024 | 89 |
| 2025 | 69 |
| 2026 | 18 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Preparation method of ni-rich ternary precursor and use thereof
US-2024025763-A1 · Jan 25, 2024 · US
Flakes with undulate borders and method of forming thereof
US-2016376445-A1 · Dec 29, 2016 · US
Tungsten oxide-type compound having a new crystalline structure and method for preparing same
US-2016264430-A1 · Sep 15, 2016 · US
Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the same
US-2016217892-A1 · Jul 28, 2016 · US
Metallic pigments and method of coating a metallic substrate
US-2016168388-A1 · Jun 16, 2016 · US
Sintering-assisted deposition of uniform titania nanocrystalline coatings over Al flakes in aqueous solution
US-9359504-B2 · Jun 7, 2016 · US
Zinc oxide powder and process for manufacturing same
US-9327994-B2 · May 3, 2016 · US
Organic dispersion of inorganic nano-platelets
US-9321654-B2 · Apr 26, 2016 · US
Morphologically and size uniform monodisperse particles and their shape-directed self-assembly
US-2016108313-A1 · Apr 21, 2016 · US
Metallic pigment composition
US-9296906-B2 · Mar 29, 2016 · US
Flaky stainless-steel pigment, resin composition formulated with the same, and coated product provided with coating film formed from resin composition
US-2016040015-A1 · Feb 11, 2016 · US
Film comprising single-layer carbon nanotubes and having dense portions and sparse portions, process for producing same, and material including said film and process for producing same
US-2016012975-A1 · Jan 14, 2016 · US
Positive electrode active substance, positive electrode material, positive electrode, and non-aqueous electrolyte secondary battery
US-2016013486-A1 · Jan 14, 2016 · US
Method of preparing a vanadium oxide compound and use thereof in electrochemical cells
US-2016006028-A1 · Jan 7, 2016 · US
Zinc oxide sputtering target
US-2015376024-A1 · Dec 31, 2015 · US
Sorting two-dimensional nanomaterials by thickness
US-9221064-B2 · Dec 29, 2015 · US
Zeolite compositions and methods for tailoring zeolite crystal habits with growth modifiers
US-2015360964-A1 · Dec 17, 2015 · US
Preparation of suspensions
US-9206053-B2 · Dec 8, 2015 · US
Organic solvent dispersion containing flaky titanium oxide, method for production of the dispersion, titanium oxide film using the dispersion, and method for production of the titanium oxide film
US-9187339-B2 · Nov 17, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01P2004/20?
- CPC C01P2004/20 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01P2004/20 (Chemistry & Metallurgy)?
- Our database includes 778 publications tagged with this CPC code.
- Is patent activity under CPC C01P2004/20 growing?
- Publication counts under this code: 89 in 2024 vs 69 in 2025 (latest complete years).