Isolating semiconducting single-walled nanotubes or metallic single-walled nanotubes and approaches therefor
US-10395804-B2 · Aug 27, 2019 · 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 | C01B32/172 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 167 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 18 |
| 2017 | 9 |
| 2018 | 17 |
| 2019 | 12 |
| 2020 | 23 |
| 2021 | 13 |
| 2022 | 19 |
| 2023 | 12 |
| 2024 | 17 |
| 2025 | 8 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and Reagent for Improving Yield of Selective Dispersion of Semiconducting Carbon Nanotubes
US-2019218100-A1 · Jul 18, 2019 · US
Method of selective separation of semiconducting carbon nanotubes, dispersion of semiconducting carbon nanotubes, and electronic device including carbon nanotubes separated by using the method
US-10355216-B2 · Jul 16, 2019 · US
Methods for separating carbon nanotubes
US-10173149-B2 · Jan 8, 2019 · US
Doping agents for use in conjugated polymer extraction process of single-walled carbon nanotubes
US-2018346335-A1 · Dec 6, 2018 · US
Metal-carbon composites and methods for their production
US-2018339492-A1 · Nov 29, 2018 · US
Electrochemical separation and recovery of metals
US-2018318843-A1 · Nov 8, 2018 · US
Alignment of carbon nanotubes in confined channels
US-2018261772-A1 · Sep 13, 2018 · US
Monodisperse single-walled carbon nanotube populations and related methods for providing same
US-2018251371-A1 · Sep 6, 2018 · US
Length-based separation of carbon nanotubes
US-2018243692-A1 · Aug 30, 2018 · US
Process for purifying semiconducting single-walled carbon nanotubes
US-10046970-B2 · Aug 14, 2018 · US
Separation of single-walled carbon nanotubes by electronic type using block copolymers
US-10037832-B2 · Jul 31, 2018 · US
Apparatus for selective deposition of nanotubes, using a charging element, a template and a filter
US-10005671-B2 · Jun 26, 2018 · US
Method for making semiconducting layer
US-9985212-B2 · May 29, 2018 · US
Method for making semiconducting layer
US-2018123047-A1 · May 3, 2018 · US
Degradable conjugated polymers for the selective sorting of semiconducting carbon nanotubes
US-2018099870-A1 · Apr 12, 2018 · US
Degradable conjugated polymers for the selective sorting of semiconducting carbon nanotubes
US-9938149-B1 · Apr 10, 2018 · US
Monodisperse single-walled carbon nanotube populations and related methods for providing same
US-9926195-B2 · Mar 27, 2018 · US
Carbon-nanotube-elastomer composite material and sealing material and sheet material employing same
US-2018044184-A1 · Feb 15, 2018 · US
Redox Sorting of Carbon Nanotubes
US-2018016148-A1 · Jan 18, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/172?
- CPC C01B32/172 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B32/172 (Chemistry & Metallurgy)?
- Our database includes 167 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/172 growing?
- Publication counts under this code: 17 in 2024 vs 8 in 2025 (latest complete years).