Methods for forming ceramic cores
US-2018319711-A1 · Nov 8, 2018 · US
Products with a concentration gradient
Products with a concentration gradient · 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 | C04B2235/75 |
| Official title | Products with a concentration gradient |
| Display label | Products with a concentration gradient |
| Total patents | 287 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 15 |
| 2017 | 16 |
| 2018 | 22 |
| 2019 | 23 |
| 2020 | 28 |
| 2021 | 25 |
| 2022 | 28 |
| 2023 | 44 |
| 2024 | 30 |
| 2025 | 34 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ceramic matrix composite articles and methods for forming same
US-10093586-B2 · Oct 9, 2018 · US
Element for ejecting gas into a regenerator of a fluid catalytic cracking unit
US-10092889-B2 · Oct 9, 2018 · US
Porous Ceramic Particles and Method of Forming Porous Ceramic Particles
US-2018272316-A1 · Sep 27, 2018 · US
Piezoelectric composition and piezoelectric device
US-2018261758-A1 · Sep 13, 2018 · US
Silicon carbide/graphite composite and articles and assemblies comprising same
US-2018240878-A1 · Aug 23, 2018 · US
Metallic and/ or ceramic components with at least one osseointegrative and osteoinductive surface (multi)layer structure
US-2018221538-A1 · Aug 9, 2018 · US
Voltage-nonlinear resistor element and method for producing the same
US-10043604-B2 · Aug 7, 2018 · US
Methods for forming ceramic matrix composite articles
US-9975815-B2 · May 22, 2018 · US
Phase gradient nanocomposite window fabrication and method of fabricating durable optical windows
US-2018093449-A1 · Apr 5, 2018 · US
A method of fabricating a composite material part by self-propagating high temperature synthesis
US-2018044249-A1 · Feb 15, 2018 · US
Dental temporary calcined body having colored inside
US-2018028293-A1 · Feb 1, 2018 · US
Additive manufacturing of composite materials with composition gradient
US-2017361600-A1 · Dec 21, 2017 · US
a/ß-Sialon Having Improved Sintering Activity and High Edge Strength
US-2017362131-A1 · Dec 21, 2017 · US
Shaped abrasive particle including dopant material and method of forming same
US-2017349797-A1 · Dec 7, 2017 · US
Solid oxide fuel cell
US-9799905-B2 · Oct 24, 2017 · US
Dielectric ceramic composition and multilayer ceramic capacitor
US-2017287636-A1 · Oct 5, 2017 · US
Piezoelectric element
US-2017288129-A1 · Oct 5, 2017 · US
Voltage-nonlinear resistor element and method for producing the same
US-2017278601-A1 · Sep 28, 2017 · US
Method to manufacture a colored blank, and blank
US-2017273764-A1 · Sep 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/75?
- CPC C04B2235/75 is the Cooperative Patent Classification code for “Products with a concentration gradient.”
- How many patents are filed under CPC C04B2235/75 (Products with a concentration gradient)?
- Our database includes 287 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/75 growing?
- Publication counts under this code: 30 in 2024 vs 34 in 2025 (latest complete years).