Production system, production method and application of general-purpose high-purity chemicals
US-12539471-B2 · Feb 3, 2026 · US
Purification
Purification · 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 | C01B33/10778 |
| Official title | {Purification} |
| Display label | Purification |
| Total patents | 55 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 9 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing diiodosilane
US-2025313483-A1 · Oct 9, 2025 · US
Method for producing purified chlorosilanes
US-12162763-B2 · Dec 10, 2024 · US
Process for reducing the content of boron compounds in halosilane-containing compositions
US-12060376-B2 · Aug 13, 2024 · US
Production system, production method and application of general-purpose high-purity chemicals
US-2024042343-A1 · Feb 8, 2024 · US
Partially hydrogenated chlorosilanes and methods for preparing same by selective hydrogenation
US-11827522-B2 · Nov 28, 2023 · US
Method for producing hydrogenated polysilane compound
US-2023357028-A1 · Nov 9, 2023 · US
Method for fabricating trihalodisilane and method for fabricating semiconductor device using the same
US-2023264963-A1 · Aug 24, 2023 · US
Cracking process for reactive distillation of chlorosilane slurry
US-2023219820-A1 · Jul 13, 2023 · US
Method for purifying iodosilanes
US-2022340430-A1 · Oct 27, 2022 · US
Trichlorosilane production method, and pipes
US-2022274840-A1 · Sep 1, 2022 · US
Transsilylation catalysis
US-11345604-B2 · May 31, 2022 · US
Method for Producing Refined Chlorosilane
US-2022073358-A1 · Mar 10, 2022 · US
Process for reducing the content of boron compounds in halosilane-containing compositions
US-2022017546-A1 · Jan 20, 2022 · US
Transsilylation catalysis
US-2021300769-A1 · Sep 30, 2021 · US
Partially hydrogenated chlorosilanes and methods for preparing same by selective hydrogenation
US-2021261419-A1 · Aug 26, 2021 · US
Trichlorosilane manufacturing apparatus, and method for manufacturing trichlorosilane
US-2020277197-A1 · Sep 3, 2020 · US
Purification of chlorosilanes by means of distillation and adsorption
US-10632398-B2 · Apr 28, 2020 · US
Process for separating aluminum chloride from silanes
US-10584136-B2 · Mar 10, 2020 · US
Purification system of trichlorosilane and silicon crystal
US-10584035-B2 · Mar 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B33/10778?
- CPC C01B33/10778 is the Cooperative Patent Classification code for “Purification.”
- How many patents are filed under CPC C01B33/10778 (Purification)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC C01B33/10778 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).