Multifunctional and stable nano-architectures containing nanocarbon and nano- or micro structures and a calcined hydrotalcite shell
US-2017368535-A1 · Dec 28, 2017 · 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 | C01B32/198 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 691 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 22 |
| 2016 | 27 |
| 2017 | 34 |
| 2018 | 73 |
| 2019 | 81 |
| 2020 | 90 |
| 2021 | 83 |
| 2022 | 77 |
| 2023 | 65 |
| 2024 | 72 |
| 2025 | 57 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
One-pot organic polymeric surface activation and nanoparticle reduction
US-2017373249-A1 · Dec 28, 2017 · US
Graphene/porous iron oxide nanorod composite and manufacturing method thereof
US-2017352446-A1 · Dec 7, 2017 · US
Graphene-Metal Hybrid Foam-Based Electrode for an Alkali Metal Battery
US-2017352869-A1 · Dec 7, 2017 · US
Graphene and the production of graphene
US-2017298523-A1 · Oct 19, 2017 · US
Large scale oxidized graphene production for industrial applications
US-9758379-B2 · Sep 12, 2017 · US
Graphene oxide-nanodiamond composite, manufacturing method thereof, and nanofluid including the same
US-2017218243-A1 · Aug 3, 2017 · US
Synthesis of three-dimensional graphene foam: use as supercapacitors
US-9691916-B2 · Jun 27, 2017 · US
Process for Unitary Graphene Layer or Graphene Single Crystal
US-2017073834-A1 · Mar 16, 2017 · US
Transfer method of materials by using petroleum jelly
US-2017001424-A1 · Jan 5, 2017 · US
Unitary graphene layer or graphene single crystal
US-9533889-B2 · Jan 3, 2017 · US
Functionalized reduced graphene oxide and methods of producing the same
US-2016376154-A1 · Dec 29, 2016 · US
Method for manufacturing reduced graphene oxide using solid hydrazine derivative
US-9527744-B2 · Dec 27, 2016 · US
Compositions of and methods for making stable carbonaceous nanomaterials
US-2016348498-A1 · Dec 1, 2016 · US
Graphene-metal chalcogenide porous material
US-2016332136-A1 · Nov 17, 2016 · US
Method for manufacturing positive electrode active material for energy storage device and energy storage device
US-9490474-B2 · Nov 8, 2016 · US
Conductive carbon, electrode material including said carbon, electrode in which said electrode material is used, and electric storage device provided with said electrode
US-2016322635-A1 · Nov 3, 2016 · US
Preparation method of reduced and n-doped graphene oxide and the reduced and n-doped graphene oxide thereby
US-2016315194-A1 · Oct 27, 2016 · US
Highly conducting graphitic films from graphene liquid crystals
US-2016304351-A1 · Oct 20, 2016 · US
Production of graphene oxide
US-2016298244-A1 · Oct 13, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/198?
- CPC C01B32/198 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B32/198 (Chemistry & Metallurgy)?
- Our database includes 691 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/198 growing?
- Publication counts under this code: 72 in 2024 vs 57 in 2025 (latest complete years).