Charge-reversed silica sol
US-12195344-B2 · Jan 14, 2025 · US
using ion exchangers
using ion exchangers · 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 | C01B33/1435 |
| Official title | {using ion exchangers} |
| Display label | using ion exchangers |
| Total patents | 28 |
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 | 2 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 7 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing silica particles, silica particles produced by such method, compositions and uses of such silica particles
US-2024351889-A1 · Oct 24, 2024 · US
Silica-containing insulating composition
US-11961636-B2 · Apr 16, 2024 · US
Method for producing silica sol having elongated particle shape
US-11897774-B2 · Feb 13, 2024 · US
Method for producing silica sol having elongated particle shape
US-11814295-B2 · Nov 14, 2023 · US
Charge-reversed silica sol
US-2021002139-A1 · Jan 7, 2021 · US
Method for producing silica sol having elongated particle shape
US-2020407230-A1 · Dec 31, 2020 · US
Method for producing silica sol having elongated particle shape
US-2020392004-A1 · Dec 17, 2020 · US
Method for producing purified aqueous solution of silicic acid
US-10865113-B2 · Dec 15, 2020 · US
Silica-containing insulating composition
US-2020286644-A1 · Sep 10, 2020 · US
Polyaluminum salts and their uses in preparation of high-purity colloidal aluminum-silica composite particles and zeolites
US-10654724-B2 · May 19, 2020 · US
Method for producing purified active silicic acid solution and silica sol
US-10550300-B2 · Feb 4, 2020 · US
Method for producing purified active silicic acid solution and silica sol
US-10400147-B2 · Sep 3, 2019 · US
Method for producing purified aqueous solution of silicic acid
US-2019055131-A1 · Feb 21, 2019 · US
Silica-based polishing particle and abrasive
US-10184069-B2 · Jan 22, 2019 · US
Non-spherical silica sol, process for producing the same, and composition for polishing
US-10160894-B2 · Dec 25, 2018 · US
Process for preparing aqueous colloidal silica sols of high purity from alkali metal silicate solutions
US-10065865-B2 · Sep 4, 2018 · US
Heat-insulation material and production method thereof
US-10042092-B2 · Aug 7, 2018 · US
Silica-based polishing particle and abrasive
US-2018155591-A1 · Jun 7, 2018 · US
Polyaluminum salts and their uses in preparation of high-purity colloidal aluminum-silica composite particles and zeolites
US-2018155203-A1 · Jun 7, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B33/1435?
- CPC C01B33/1435 is the Cooperative Patent Classification code for “using ion exchangers.”
- How many patents are filed under CPC C01B33/1435 (using ion exchangers)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC C01B33/1435 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).