Sintered body, method for producing same, and dielectric composition
US-12441662-B2 · Oct 14, 2025 · US
Grain boundary phases intentionally being absent
Grain boundary phases intentionally being absent · 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 | C04B2235/87 |
| Official title | Grain boundary phases intentionally being absent |
| Display label | Grain boundary phases intentionally being absent |
| Total patents | 67 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 8 |
| 2020 | 9 |
| 2021 | 4 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polycrystalline cubic crystal boron nitride and tool
US-12391552-B2 · Aug 19, 2025 · US
Silicon particles for battery electrodes
US-2024396012-A1 · Nov 28, 2024 · US
Silicon particles for battery electrodes
US-12132195-B2 · Oct 29, 2024 · US
Multilayer electronic component
US-2024355544-A1 · Oct 24, 2024 · US
Silicon particles for battery electrodes
US-12126007-B2 · Oct 22, 2024 · US
Composite sintered body, electrostatic chuck member, electrostatic chuck device, and method for producing composite sintered body
US-12074050-B2 · Aug 27, 2024 · US
Multilayer electronic component
US-2024212934-A1 · Jun 27, 2024 · US
Silicon particles for battery electrodes
US-11955623-B2 · Apr 9, 2024 · US
High temperature ceramic powder systems
US-2024018055-A1 · Jan 18, 2024 · US
Silicon Nitride Sintered Body, Wear-Resistant Member, And Method For Manufacturing Silicon Nitride Sintered Body
US-2023382809-A1 · Nov 30, 2023 · US
Composite sintered body, electrostatic chuck member, and electrostatic chuck device
US-11784079-B2 · Oct 10, 2023 · US
Aluminum nitride-based sintered compact and semiconductor holding device
US-11685695-B2 · Jun 27, 2023 · US
Piezoelectric ceramics, piezoelectric element, and electronic apparatus
US-11647677-B2 · May 9, 2023 · US
Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module, and method for manufacturing thermoelectric conversion material
US-11647674-B2 · May 9, 2023 · US
Silicon nitride sintered body, wear-resistant member using the same, and method for producing silicon nitride sintered body
US-2023093291-A1 · Mar 23, 2023 · US
Cutting tool
US-2023018290-A1 · Jan 19, 2023 · US
Polycrystalline cubic crystal boron nitride and tool
US-2022371891-A1 · Nov 24, 2022 · US
Ceramic material and electrostatic chuck device
US-11387132-B2 · Jul 12, 2022 · US
Nuclear fuel pellets and manufacturing method thereof
US-2022208401-A1 · Jun 30, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/87?
- CPC C04B2235/87 is the Cooperative Patent Classification code for “Grain boundary phases intentionally being absent.”
- How many patents are filed under CPC C04B2235/87 (Grain boundary phases intentionally being absent)?
- Our database includes 67 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/87 growing?
- Publication counts under this code: 8 in 2024 vs 7 in 2025 (latest complete years).