Method for producing alumina sintered body
US-2020392044-A1 · Dec 17, 2020 · US
Silicon content
Silicon content · 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 | C04B2235/728 |
| Official title | Silicon content |
| Display label | Silicon content |
| Total patents | 128 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 15 |
| 2019 | 21 |
| 2020 | 9 |
| 2021 | 18 |
| 2022 | 4 |
| 2023 | 14 |
| 2024 | 16 |
| 2025 | 8 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ceramic component
US-2020308063-A1 · Oct 1, 2020 · US
Method of fabricating a ceramic from a chemical reaction
US-10723658-B2 · Jul 28, 2020 · US
Method of processing a ceramic matrix composite (cmc) component
US-2020123066-A1 · Apr 23, 2020 · US
Ceramic complex and method for producing the same
US-2020071606-A1 · Mar 5, 2020 · US
Methods of forming ceramic matrix composites using sacrificial fibers and related products
US-2019345073-A1 · Nov 14, 2019 · US
Method for manufacturing magnesium-based thermoelectric conversion material, method for manufacturing magnesium-based thermoelectric conversion element, magnesium-based thermoelectric conversion material, magnesium-based thermoelectric conversion element, and thermoelectric conversion device
US-10468577-B2 · Nov 5, 2019 · US
Solid electrolyte body for gas sensor element, production method thereof and gas sensor element
US-2019331634-A1 · Oct 31, 2019 · US
Method to manufacture a colored blank, and blank
US-10441391-B2 · Oct 15, 2019 · US
Oriented alumina substrate for epitaxial growth
US-10435815-B2 · Oct 8, 2019 · US
Oriented alumina substrate for epitaxial growth
US-10435816-B2 · Oct 8, 2019 · US
Carbon fiber, carbon composite and furnace purification by hydrogen reduction followed by thermal heat treatment
US-2019293354-A1 · Sep 26, 2019 · US
Methods of forming ceramic matrix composites using sacrificial fibers and related products
US-10384981-B2 · Aug 20, 2019 · US
Ferrite sintered magnet
US-10373746-B2 · Aug 6, 2019 · US
Armour plate
US-2019234712-A1 · Aug 1, 2019 · US
Ceramic matrix composite articles formation method
US-10329201-B2 · Jun 25, 2019 · US
Boron nitride aggregate powder
US-10280284-B2 · May 7, 2019 · US
Method for making ceramic matrix composite articles
US-2019100466-A1 · Apr 4, 2019 · US
Ceramic matrix composite articles
US-2019084891-A1 · Mar 21, 2019 · US
Ceramic matrix composite articles
US-2019084892-A1 · Mar 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/728?
- CPC C04B2235/728 is the Cooperative Patent Classification code for “Silicon content.”
- How many patents are filed under CPC C04B2235/728 (Silicon content)?
- Our database includes 128 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/728 growing?
- Publication counts under this code: 16 in 2024 vs 8 in 2025 (latest complete years).