A waterproof and oxygen-isolating sealing film and preparation method
US-2016362577-A1 · Dec 15, 2016 · US
Oxidation
Oxidation · 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 | C01B32/23 |
| Official title | Oxidation |
| Display label | Oxidation |
| Total patents | 443 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 40 |
| 2016 | 66 |
| 2017 | 62 |
| 2018 | 56 |
| 2019 | 49 |
| 2020 | 42 |
| 2021 | 31 |
| 2022 | 23 |
| 2023 | 19 |
| 2024 | 26 |
| 2025 | 23 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Attachment of Graphene and Metal or Metal Oxide-Modified Graphene to Organic Polymers Used in Organic Fuel Cells
US-2016359183-A1 · Dec 8, 2016 · US
Methods and apparatus to control reaction rates of chemical reactions by applying a magnetic field
US-9511343-B2 · Dec 6, 2016 · US
Modified Graphene, Method for Producing a Modified Graphene and Applications Thereof
US-2016347619-A1 · Dec 1, 2016 · US
Graphene oxide polymer with nonlinear resistivity
US-9502150-B2 · Nov 22, 2016 · US
Cationic polymerization process for the synthesis of nano-structured polymers containing graphene
US-9493594-B2 · Nov 15, 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
Graphene compositions and methods of making the same
US-9422165-B2 · Aug 23, 2016 · US
Graphite oxide coated particulate material and method of making thereof
US-9403115-B2 · Aug 2, 2016 · US
Methods for producing functionalized graphenes
US-2016207944-A1 · Jul 21, 2016 · US
Method of producing graphene using surfactant
US-9388049-B2 · Jul 12, 2016 · US
Graphene materials having randomly distributed two-dimensional structural defects
US-9352968-B2 · May 31, 2016 · US
Material comprising reduced graphene oxide, a device comprising the material and a method of producing the material
US-2016133361-A1 · May 12, 2016 · US
Graphene oxide sheet, article containing graphene-containing substance produced by reducing the graphene oxide sheet, and process for production of the graphene oxide sheet
US-9327985-B2 · May 3, 2016 · US
Method of preparing reduced graphene oxide and reduced graphene oxide-polymer composites
US-9318231-B2 · Apr 19, 2016 · US
Production of graphene materials in a cavitating fluid
US-9315388-B2 · Apr 19, 2016 · US
Interconnected corrugated carbon-based network
US-2016077074-A1 · Mar 17, 2016 · US
Method for preparing graphene oxide films and fibers
US-9284193-B2 · Mar 15, 2016 · US
System and method for 3d printing of aerogels
US-2016067891-A1 · Mar 10, 2016 · US
Positive electrode for lithium secondary battery, manufacturing method thereof, and lithium secondary battery
US-2016047060-A1 · Feb 18, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/23?
- CPC C01B32/23 is the Cooperative Patent Classification code for “Oxidation.”
- How many patents are filed under CPC C01B32/23 (Oxidation)?
- Our database includes 443 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/23 growing?
- Publication counts under this code: 26 in 2024 vs 23 in 2025 (latest complete years).