Method for producing large-diameter sio2 powder, and cosmetic composition containing same
US-2024208830-A1 · Jun 27, 2024 · 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 | C01B33/193 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 172 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 7 |
| 2017 | 22 |
| 2018 | 19 |
| 2019 | 8 |
| 2020 | 13 |
| 2021 | 19 |
| 2022 | 10 |
| 2023 | 10 |
| 2024 | 20 |
| 2025 | 18 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Porous silica particle and cleansing cosmetic
US-10143636-B2 · Dec 4, 2018 · US
Method for the separation of metal ions that are divalent or higher from strong acids or highly acidic media
US-10106426-B2 · Oct 23, 2018 · US
Novel process for the preparation of silicate and its use for the preparation of precipitated silica
US-2018297854-A1 · Oct 18, 2018 · US
Silica synthesis
US-2018282169-A1 · Oct 4, 2018 · US
Rubber composition, crosslinked rubber composition and tire
US-10017625-B2 · Jul 10, 2018 · US
Silane-modified silicic acid, method for the production and use thereof
US-9926451-B2 · Mar 27, 2018 · US
Use of self-assembled nanoporous glass colloids for prolongation of plasticity of polymeric materials
US-9822233-B2 · Nov 21, 2017 · US
Porous silica particle and cleansing cosmetic
US-2017312196-A1 · Nov 2, 2017 · US
Porous silica particle, method for producing the same, and cleansing cosmetic containing the same
US-2017304161-A1 · Oct 26, 2017 · US
Precipitated silicas for storage-stable RTV-1 silicone rubber formulations without stabilizer
US-9738535-B2 · Aug 22, 2017 · US
Process for preparing precipitated silicas
US-9725325-B2 · Aug 8, 2017 · US
Hydrophilic silica as filler for silicone rubber formulations
US-9725326-B2 · Aug 8, 2017 · US
Process for preparing precipitated silica
US-9695054-B2 · Jul 4, 2017 · US
Process for preparing precipitated silica having specific morphology, particle size and porosity
US-9695053-B2 · Jul 4, 2017 · US
Process for the preparation of precipitated silicas, precipitated silicas and their uses, in particular for the reinforcement of polymers
US-2017073238-A1 · Mar 16, 2017 · US
Process for the preparation of precipitated silicas, precipitated silicas and their uses, in particular for the reinforcement of polymers
US-2017073521-A1 · Mar 16, 2017 · US
High-purity silicon dioxide granules for quartz glass applications and method for producing said granules
US-2017066654-A1 · Mar 9, 2017 · US
Novel method of preparing precipitated silicas, novel precipitated silicas, and their uses, in particular for reinforcing polymers
US-2017058111-A1 · Mar 2, 2017 · US
Process for the preparation of precipitated silicas, precipitated silicas and their uses, in particular for the reinforcement of polymers
US-2017051126-A1 · Feb 23, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B33/193?
- CPC C01B33/193 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B33/193 (Chemistry & Metallurgy)?
- Our database includes 172 publications tagged with this CPC code.
- Is patent activity under CPC C01B33/193 growing?
- Publication counts under this code: 20 in 2024 vs 18 in 2025 (latest complete years).