High temperature fiber and method of making
US-2024368041-A1 · Nov 7, 2024 · US
Silica and alumina, including aluminosilicates, e.g. mullite
Silica and alumina, including aluminosilicates, e.g. mullite · 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 | C04B2235/5228 |
| Official title | Silica and alumina, including aluminosilicates, e.g. mullite |
| Display label | Silica and alumina, including aluminosilicates, e.g. mullite |
| Total patents | 398 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 22 |
| 2017 | 27 |
| 2018 | 40 |
| 2019 | 43 |
| 2020 | 48 |
| 2021 | 57 |
| 2022 | 29 |
| 2023 | 33 |
| 2024 | 33 |
| 2025 | 33 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing part made of composite material
US-2017334791-A1 · Nov 23, 2017 · US
Heat-insulating protective member for skid post and method for applying the heat-insulating protective member for skid post
US-2017314186-A1 · Nov 2, 2017 · US
Large diameter slag wool, composition and method of making same
US-9796635-B1 · Oct 24, 2017 · US
Inorganic fiber molded body and process for producing the same
US-9751281-B2 · Sep 5, 2017 · US
Termination Device of a Reactor of a Fluid Catalytic Cracking Unit
US-2017203270-A1 · Jul 20, 2017 · US
Apparatus and methods for processing ceramic fiber
US-2017144925-A1 · May 25, 2017 · US
Ceramic matrix composite materials with rare earth phosphate fibers and methods for preparing the same
US-2017067345-A1 · Mar 9, 2017 · US
Honeycomb structure
US-9574473-B2 · Feb 21, 2017 · US
Percolated mullite and a method of forming same
US-9527775-B2 · Dec 27, 2016 · US
Part made from oxide/oxide composite material for 3-d reinforcing and method for manufacture of same
US-2016362822-A1 · Dec 15, 2016 · US
Cooling holes manufactured with ebc in place
US-2016348511-A1 · Dec 1, 2016 · US
Monolithic ceramic rods to enable cooling holes in cmc
US-2016348515-A1 · Dec 1, 2016 · US
Apparatus and method to reduce wear and friction between CMC-to-metal attachment and interface
US-9500083-B2 · Nov 22, 2016 · US
Method for fabricating a ceramic matrix composite rotor blade
US-2016312626-A1 · Oct 27, 2016 · US
Method of desizing fiber
US-2016305048-A1 · Oct 20, 2016 · US
Composite ceramic comprising a corrosion protection layer and production method
US-2016297717-A1 · Oct 13, 2016 · US
Honeycomb structure and manufacturing method of honeycomb structure
US-2016288449-A1 · Oct 6, 2016 · US
Hybrid Sandwich Ceramic Matrix Composite
US-2016264476-A1 · Sep 15, 2016 · US
Ultrafine continuous fibrous ceramic filter and method of manufacturing same
US-2016244373-A1 · Aug 25, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/5228?
- CPC C04B2235/5228 is the Cooperative Patent Classification code for “Silica and alumina, including aluminosilicates, e.g. mullite.”
- How many patents are filed under CPC C04B2235/5228 (Silica and alumina, including aluminosilicates, e.g. mullite)?
- Our database includes 398 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/5228 growing?
- Publication counts under this code: 33 in 2024 vs 33 in 2025 (latest complete years).