Method for preparing porous carbon material, and sulfur-carbon composite and lithium-sulfur battery including the same
US-12580193-B2 · Mar 17, 2026 · US
Opening; Filling
Opening; Filling · 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 | C01B32/178 |
| Official title | Opening; Filling |
| Display label | Opening; Filling |
| Total patents | 60 |
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 | 1 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 8 |
| 2019 | 11 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Infiltrated carbon nanotubes
US-12486569-B2 · Dec 2, 2025 · US
Copper-filled carbon nanotubes and synthesis methods thereof
US-12151938-B2 · Nov 26, 2024 · US
Carbon material and method for producing carbon material
US-12090448-B2 · Sep 17, 2024 · US
Sulfur-carbon composite and manufacturing method therefor
US-12062778-B2 · Aug 13, 2024 · US
Method for preparing porous carbon material, and sulfur-carbon composite and lithium-sulfur battery including the same
US-2024178390-A1 · May 30, 2024 · US
Positive electrode and lithium-sulfur battery comprising the same
US-2024178388-A1 · May 30, 2024 · US
Metal sulfide filled carbon nanotubes and synthesis methods thereof
US-11932966-B2 · Mar 19, 2024 · US
Infiltrating carbon nanotubes with carbon to prevent delamination from a substrate
US-11885011-B2 · Jan 30, 2024 · US
Infiltrated carbon nanotubes
US-2023407462-A1 · Dec 21, 2023 · US
Carbon nanotube aggregate
US-11746017-B2 · Sep 5, 2023 · US
Metal sulfide filled carbon nanotubes and synthesis methods thereof
US-2023203712-A1 · Jun 29, 2023 · US
Sulfur-carbon composite and method for preparing same
US-11611066-B2 · Mar 21, 2023 · US
Metal sulfide filled carbon nanotubes and synthesis methods thereof
US-11572636-B2 · Feb 7, 2023 · US
Carbon material and method for producing carbon material
US-2022194800-A1 · Jun 23, 2022 · US
Treatment composition for contaminated soil or ground water
US-11330744-B2 · May 10, 2022 · US
Carbon nanotube aggregate
US-2022033264-A1 · Feb 3, 2022 · US
Copper-filled carbon nanotubes and synthesis methods thereof
US-2022024768-A1 · Jan 27, 2022 · US
Metal sulfide filled carbon nanotubes and synthesis methods thereof
US-2021324537-A1 · Oct 21, 2021 · US
Method for preparing carbon nanotube fiber and carbon nanotube fiber prepared thereby
US-11136711-B2 · Oct 5, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/178?
- CPC C01B32/178 is the Cooperative Patent Classification code for “Opening; Filling.”
- How many patents are filed under CPC C01B32/178 (Opening; Filling)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/178 growing?
- Publication counts under this code: 7 in 2024 vs 1 in 2025 (latest complete years).