Hydrophobic silica wet gel and aerogel
US-2025326220-A1 · Oct 23, 2025 · US
After-treatment of gels
After-treatment of gels · 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 | C01B33/157 |
| Official title | After-treatment of gels |
| Display label | After-treatment of gels |
| Total patents | 48 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 9 |
| 2023 | 2 |
| 2024 | 10 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydrophobic silica wet gel and aerogel
US-2025326221-A1 · Oct 23, 2025 · US
Inorganic porous carrier, and production method for nucleic acid using same
US-12377409-B2 · Aug 5, 2025 · US
Porous inorganic carrier and method for producing nucleic acid using same
US-12378275-B2 · Aug 5, 2025 · US
Inorganic porous carrier and method for producing nucleic acids using same
US-12371451-B2 · Jul 29, 2025 · US
Low compression set aerogels and aerogel composites and methods of making
US-2025059052-A1 · Feb 20, 2025 · US
Low compression set aerogels and aerogel composites and methods of making
US-12172902-B2 · Dec 24, 2024 · US
Inorganic porous support and method for producing nucleic acid using same
US-12162765-B2 · Dec 10, 2024 · US
Low compression set aerogels and aerogel composites and methods of making
US-2024279071-A1 · Aug 22, 2024 · US
Method using adsorbent
US-2024165582-A1 · May 23, 2024 · US
Apparatuses and methods for producing sol, gel and silica porous body
US-2024166524-A1 · May 23, 2024 · US
System for sol-gel process control using electromagnetic fields and methods thereof
US-2024158240-A1 · May 16, 2024 · US
Columnar body, adsorbent including the columnar body, and method of removing metal and/or metal ion with the adsorbent
US-2024157330-A1 · May 16, 2024 · US
Gas detection device and gas detection method
US-11977007-B2 · May 7, 2024 · US
Porous body, adsorbent including the porous body, and method of removing metal and/or metal ion with the adsorbent
US-2024082812-A1 · Mar 14, 2024 · US
Surface-modified and metal-doped porous silica
US-2024018007-A1 · Jan 18, 2024 · US
Two-phase bicontinuous silica structure and method for producing same
US-2023257272-A1 · Aug 17, 2023 · US
Methods of making permeable aerogels
US-11707721-B2 · Jul 25, 2023 · US
Method for purifying waste solvent
US-11465906-B2 · Oct 11, 2022 · US
Hollow nano-particle, hollow silica nano-particle, and production method for same
US-2022234904-A1 · Jul 28, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B33/157?
- CPC C01B33/157 is the Cooperative Patent Classification code for “After-treatment of gels.”
- How many patents are filed under CPC C01B33/157 (After-treatment of gels)?
- Our database includes 48 publications tagged with this CPC code.
- Is patent activity under CPC C01B33/157 growing?
- Publication counts under this code: 10 in 2024 vs 6 in 2025 (latest complete years).