Ceramic cutter material with a piezoelectric effect and preparation method thereof, and cutting tool
US-2023232721-A1 · Jul 20, 2023 · US
Products showing a density-gradient
Products showing a density-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 | C04B2235/775 |
| Official title | Products showing a density-gradient |
| Display label | Products showing a density-gradient |
| Total patents | 100 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 11 |
| 2020 | 11 |
| 2021 | 5 |
| 2022 | 10 |
| 2023 | 12 |
| 2024 | 9 |
| 2025 | 16 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Localized particle additions to reduce defects in ceramic matrix composites caused by complex geometry preforming
US-2022388913-A1 · Dec 8, 2022 · US
Fabrication method of functionally-graded structures by continuous ceramic filaments
US-2022332652-A1 · Oct 20, 2022 · US
Methods of fabrication of ceramic mirror blanks
US-2022314488-A1 · Oct 6, 2022 · US
Vaporizer and ceramic vaporization core thereof and method for fabricating ceramic vaporization core
US-2022312844-A1 · Oct 6, 2022 · US
Beryllium oxide pedestals
US-2022289631-A1 · Sep 15, 2022 · US
Method to fabricate a machinable ceramic matrix composite
US-2022169574-A1 · Jun 2, 2022 · US
Electrolyte sheet for solid oxide fuel battery, production method of electrolyte sheet for solid oxide fuel battery, and single cell for solid oxide fuel battery
US-2022149412-A1 · May 12, 2022 · US
Methods of three-dimensional electrophoretic deposition for ceramic and cermet applications and systems thereof
US-11299816-B2 · Apr 12, 2022 · US
Ceramic seal component for gas turbine engine and process of making the same
US-11255206-B2 · Feb 22, 2022 · US
Cr-si sintered body
US-2022017424-A1 · Jan 20, 2022 · US
Method of impregnating a fiber texture of hollow shape
US-11117287-B2 · Sep 14, 2021 · US
Method For Producing A Layer Of A Device For The Absorption Of Electromagnetic Radiation
US-2021280982-A1 · Sep 9, 2021 · US
Ceramic matrix composite structures with controlled microstructures fabricated using chemical vapor infiltration (cvi)
US-2021238101-A1 · Aug 5, 2021 · US
Ceramic matrix composite structures with controlled microstructures fabricated using chemical vapor infiltration (CVI)
US-11072565-B2 · Jul 27, 2021 · US
Method for constructing abradable coating, and shroud
US-10994301-B2 · May 4, 2021 · US
Tuckstone
US-2020339462-A1 · Oct 29, 2020 · US
Ceramic seal component for gas turbine engine and process of making the same
US-10794205-B2 · Oct 6, 2020 · US
Ceramic seal component for gas turbine engine and process of making the same
US-2020284157-A1 · Sep 10, 2020 · US
Body made of a ceramic material
US-10759706-B2 · Sep 1, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/775?
- CPC C04B2235/775 is the Cooperative Patent Classification code for “Products showing a density-gradient.”
- How many patents are filed under CPC C04B2235/775 (Products showing a density-gradient)?
- Our database includes 100 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/775 growing?
- Publication counts under this code: 9 in 2024 vs 16 in 2025 (latest complete years).