Method to control the etching rate of materials
US-2022340429-A1 · Oct 27, 2022 · US
by reduction of silica or {free} silica-containing material
by reduction of silica or {free} silica-containing material · 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 | C01B33/023 |
| Official title | by reduction of silica or {free} silica-containing material |
| Display label | by reduction of silica or {free} silica-containing material |
| Total patents | 77 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 12 |
| 2018 | 14 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 7 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Glass bottles based silicon electrode materials
US-11367869-B2 · Jun 21, 2022 · US
Process for synthesis of MG2SI/MGO nanocomposites
US-11306002-B2 · Apr 19, 2022 · US
Negative electrode material comprising silicon flakes and preparing method of silicon flakes
US-11302913-B2 · Apr 12, 2022 · US
Synthesis of silicon products
US-2022041457-A1 · Feb 10, 2022 · US
Negative electrode active material, negative electrode including the same and lithium secondary battery including the same
US-2021351432-A1 · Nov 11, 2021 · US
Sulfur-doped silicon negative electrode material, method for producing same, lithium secondary battery negative electrode including negative electrode material, and lithium secondary battery comprising negative electrode
US-2021328214-A1 · Oct 21, 2021 · US
Negative electrode active material for lithium secondary battery and method of preparing the same
US-2021313557-A1 · Oct 7, 2021 · US
Porous silicon compositions and devices and methods thereof
US-11139473-B2 · Oct 5, 2021 · US
Negative electrode active material, negative electrode including the same and lithium secondary battery including the same
US-11133524-B2 · Sep 28, 2021 · US
Negative electrode active material for lithium secondary battery and method of preparing the same
US-11075369-B2 · Jul 27, 2021 · US
Process for synthesis of mg2si/mgo nanocomposites
US-2021130175-A1 · May 6, 2021 · US
Silicon-containing structure, method of preparing the same, carbon composite using the same, and electrode, lithium battery, and device each including the same
US-10974965-B2 · Apr 13, 2021 · US
Yolk-shell structured particles, method for producing same, and lithium secondary battery comprising same
US-2021024358-A1 · Jan 28, 2021 · US
Porous silicon based negative electrode active material, method for manufacturing the same, and rechargeable lithium battery including the same
US-10862116-B2 · Dec 8, 2020 · US
Porous silicon compositions and devices and methods thereof
US-2020220170-A1 · Jul 9, 2020 · US
Negative electrode material comprising silicon flakes and preparing method of silicon flakes
US-2020119344-A1 · Apr 16, 2020 · US
Process for the Production of Commercial Grade Silicon
US-2020095131-A1 · Mar 26, 2020 · US
Superhard constructions and methods of making same
US-2019344351-A1 · Nov 14, 2019 · US
Glass bottles based silicon electrode materials
US-2019326593-A1 · Oct 24, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B33/023?
- CPC C01B33/023 is the Cooperative Patent Classification code for “by reduction of silica or {free} silica-containing material.”
- How many patents are filed under CPC C01B33/023 (by reduction of silica or {free} silica-containing material)?
- Our database includes 77 publications tagged with this CPC code.
- Is patent activity under CPC C01B33/023 growing?
- Publication counts under this code: 7 in 2024 vs 5 in 2025 (latest complete years).