Method for producing hydrophobic silica aerogel blanket, and silica aerogel blanket
US-2026091981-A1 · Apr 2, 2026 · US
Preparation of hydrogels
Preparation of hydrogels · 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 | C01B33/152 |
| Official title | Preparation of hydrogels |
| Display label | Preparation of hydrogels |
| Total patents | 55 |
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 | 1 |
| 2017 | 2 |
| 2018 | 14 |
| 2019 | 2 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 6 |
| 2024 | 9 |
| 2025 | 2 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of manufacturing silica aerogel
US-12570535-B2 · Mar 10, 2026 · US
Gas isolation method
US-2026027514-A1 · Jan 29, 2026 · US
Silica aerogel with increased alkaline stability
US-12515958-B2 · Jan 6, 2026 · US
Robust bijels for interfacial catalysis and interphase separations
US-12390782-B2 · Aug 19, 2025 · US
Eco-friendly simple processing of pure alkali silicate construction parts based on water-glass
US-2025033242-A1 · Jan 30, 2025 · US
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
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
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
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
Robust bijels for interfacial catalysis and interphase separations
US-2024075445-A1 · Mar 7, 2024 · US
Process for preparing waterglass-based silica aerogels and products thereof
US-11919776-B2 · Mar 5, 2024 · US
Method for manufacturing aerogel blanket
US-11866324-B2 · Jan 9, 2024 · US
Robust bijels for interfacial catalysis and interphase separations
US-11857936-B2 · Jan 2, 2024 · US
Silica aerogel with increased alkaline stability
US-2023348285-A1 · Nov 2, 2023 · US
Method of manufacturing silica aerogel
US-2023286811-A1 · Sep 14, 2023 · US
Method and apparatus for manufacturing aerogel sheet
US-11697596-B2 · Jul 11, 2023 · US
Method for producing silica aerogel blanket and apparatus for producing same
US-2023124388-A1 · Apr 20, 2023 · US
Method for manufacturing aerogel blanket and aerogel blanket manufactured thereby
US-2023050685-A1 · Feb 16, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B33/152?
- CPC C01B33/152 is the Cooperative Patent Classification code for “Preparation of hydrogels.”
- How many patents are filed under CPC C01B33/152 (Preparation of hydrogels)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC C01B33/152 growing?
- Publication counts under this code: 9 in 2024 vs 2 in 2025 (latest complete years).