Carbon nanofibers encapsulating metal cobalt, and production method therefor
US-9505622-B2 · Nov 29, 2016 · 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 | C01B31/0233 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 135 |
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 | 50 |
| 2016 | 38 |
| 2017 | 38 |
| 2018 | 8 |
| 2019 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Generating catalysts for forming carbon allotropes
US-9504998-B2 · Nov 29, 2016 · US
Catalyst for preparing chiral selective and conductive selective single-walled carbon nanotube, preparation method and application thereof
US-9468911-B2 · Oct 18, 2016 · US
Carbon nanotubes and production method thereof
US-9463981-B2 · Oct 11, 2016 · US
Method for continuous production of aligned nanostructures on a running substrate and related device
US-2016289826-A1 · Oct 6, 2016 · US
Method of manufacturing carbon nanotubes
US-2016273100-A1 · Sep 22, 2016 · US
Nanostructures patterned by electrostatic printing
US-9409780-B2 · Aug 9, 2016 · US
Production apparatus for carbon nanotubes, feed unit for being part of production apparatus, and production method for carbon nanotubes
US-2016207772-A1 · Jul 21, 2016 · US
Process for producing a carbon nanostructure
US-9309123-B2 · Apr 12, 2016 · US
Substrate such as for use with carbon nanotubes
US-9296614-B1 · Mar 29, 2016 · US
Preparation of nitrogen-doped carbon tubes
US-9216900-B2 · Dec 22, 2015 · US
Method for producing carbon nanotubes using protein polymer
US-2015353359-A1 · Dec 10, 2015 · US
Method for making carbon nanotubes
US-9206049-B2 · Dec 8, 2015 · US
Method for producing conductive film
US-2015340117-A1 · Nov 26, 2015 · US
Carbon nanotube foams with controllable mechanical properties
US-2015329961-A1 · Nov 19, 2015 · US
Continuous process for the production of nanostructures including nanotubes
US-9181639-B2 · Nov 10, 2015 · US
Preparation of array of long carbon nanotubes and fibers therefrom
US-9181098-B2 · Nov 10, 2015 · US
Synthesis of high quality carbon single-walled nanotubes
US-9174847-B2 · Nov 3, 2015 · US
Organic/inorganic composite comprising three-dimensional carbon nanotube networks, method for preparing the organic/inorganic composite and electronic device using the organic/inorganic composite
US-9177745-B2 · Nov 3, 2015 · US
Method for controlling bulk density of carbon nanotube agglomerate
US-2015298974-A1 · Oct 22, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B31/0233?
- CPC C01B31/0233 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B31/0233 (Chemistry & Metallurgy)?
- Our database includes 135 publications tagged with this CPC code.
- Is patent activity under CPC C01B31/0233 growing?
- Publication counts under this code: 8 in 2018 vs 1 in 2019 (latest complete years).