Porous silica particles
US-11794165-B2 · Oct 24, 2023 · US
Preparation of silica xerogels
Preparation of silica xerogels · 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 | C01B33/16 |
| Official title | Preparation of silica xerogels |
| Display label | Preparation of silica xerogels |
| Total patents | 68 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 7 |
| 2019 | 14 |
| 2020 | 9 |
| 2021 | 8 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 2 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermal insulation sheet and manufacturing method therefor
US-11788227-B2 · Oct 17, 2023 · US
Monolithic optical systems
US-2023204936-A1 · Jun 29, 2023 · US
Aerogel and method for producing same
US-11673810-B2 · Jun 13, 2023 · US
Heat insulating material, method for manufacturing same, and electronic equipment and automobile using same
US-11577490-B2 · Feb 14, 2023 · US
Aerogel composite powder
US-11326055-B2 · May 10, 2022 · US
Method for producing thermal insulation sheet
US-2022090313-A1 · Mar 24, 2022 · US
Heat-insulating sheet and method for manufacturing same
US-2022065385-A1 · Mar 3, 2022 · US
Method for producing silica aerogel and silica aerogel produced thereby
US-11242255-B2 · Feb 8, 2022 · US
Mixed transition metal oxides silica xerogels as antifouling/fouling release surfaces
US-11161987-B2 · Nov 2, 2021 · US
Thermal insulation sheet and manufacturing method therefor
US-2021131025-A1 · May 6, 2021 · US
Heat-insulating sheet and manufacturing method therefor
US-2021115622-A1 · Apr 22, 2021 · US
Heat insulating sheet
US-10948120-B2 · Mar 16, 2021 · US
Thermal insulator and method for manufacturing same
US-2021062955-A1 · Mar 4, 2021 · US
Thermal insulation sheet and manufacturing method therefor
US-10920367-B2 · Feb 16, 2021 · US
Method for producing an aerogel material
US-2021039954-A1 · Feb 11, 2021 · US
Heat-insulating body, heat-insulating sheet using same, and method for manufacturing heat-insulating body
US-2021018135-A1 · Jan 21, 2021 · US
Method for manufacturing aerogel
US-10875776-B2 · Dec 29, 2020 · US
Porous Silica Particles
US-2020376464-A1 · Dec 3, 2020 · US
Aerogel and method for producing same
US-2020231452-A1 · Jul 23, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B33/16?
- CPC C01B33/16 is the Cooperative Patent Classification code for “Preparation of silica xerogels.”
- How many patents are filed under CPC C01B33/16 (Preparation of silica xerogels)?
- Our database includes 68 publications tagged with this CPC code.
- Is patent activity under CPC C01B33/16 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).