Needled ceramic matrix composite cooling passages
US-12570580-B2 · Mar 10, 2026 · US
Cores; Mandrels {(B28B1/44 takes precedence; of special materials in general B28B7/34; cores for making blind holes in situ E04G15/04; for making recesses E04G15/06)}
Cores; Mandrels {(B28B1/44 takes precedence; of special materials in general B28B7/34; cores for making blind holes in situ E04G15/04; for making recesses E04G15/06)} · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B28B7/28 |
| Official title | Cores; Mandrels {(B28B1/44 takes precedence; of special materials in general B28B7/34; cores for making blind holes in situ E04G15/04; for making recesses E04G15/06)} |
| Display label | Cores; Mandrels {(B28B1/44 takes precedence; of special materials in general B28B7/34; cores for making blind holes in situ E04G15/04; for making recesses E04G15/06)} |
| Total patents | 32 |
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 | 2 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2024 | 2 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal tooling configuration for the creation of z-channels in woven ceramic matrix composite preforms
US-12473236-B2 · Nov 18, 2025 · US
Cores for ceramic matrix composite components
US-2025312943-A1 · Oct 9, 2025 · US
Multi-piece mandrel for building up airfoil structure
US-2025264027-A1 · Aug 21, 2025 · US
Internal tooling configuration for the creation of z-channels in woven ceramic matrix composite preforms
US-2025128990-A1 · Apr 24, 2025 · US
Arthroscopic devices and methods
US-12280520-B2 · Apr 22, 2025 · US
Tool comprising eutectic material, method of making the tool and method of using the tool
US-12226932-B2 · Feb 18, 2025 · US
Tool comprising eutectic material, method of making the tool and method of using the tool
US-2024190044-A1 · Jun 13, 2024 · US
Arthroscopic devices and methods
US-2024139997-A1 · May 2, 2024 · US
Additively manufactured integrated casting core structure with ceramic shell
US-11235491-B2 · Feb 1, 2022 · US
Needled ceramic matrix composite cooling passages
US-2021163365-A1 · Jun 3, 2021 · US
Arthroscopic devices and methods
US-2021122082-A1 · Apr 29, 2021 · US
Needled ceramic matrix composite cooling passages
US-10774005-B2 · Sep 15, 2020 · US
Arthroscopic devices and methods
US-10744672-B2 · Aug 18, 2020 · US
Additively manufactured integrated casting core structure with ceramic shell
US-2019358850-A1 · Nov 28, 2019 · US
Manufacturing method of turbine blade member
US-2019283271-A1 · Sep 19, 2019 · US
Additively manufactured integrated casting core structure with ceramic shell
US-10391670-B2 · Aug 27, 2019 · US
Needled ceramic matrix composite cooling passages
US-2019210929-A1 · Jul 11, 2019 · US
Additively manufactured integrated casting core structure with ceramic shell
US-2019001522-A1 · Jan 3, 2019 · US
Modified pocket former
US-10072429-B2 · Sep 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B28B7/28?
- CPC B28B7/28 is the Cooperative Patent Classification code for “Cores; Mandrels {(B28B1/44 takes precedence; of special materials in general B28B7/34; cores for making blind holes in situ E04G15/04; for making recesses E04G15/06)}.”
- How many patents are filed under CPC B28B7/28 (Cores; Mandrels {(B28B1/44 takes precedence; of special materials in general B28B7/34; cores for making blind holes in situ E04G15/04; for making recesses E04G15/06)})?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC B28B7/28 growing?
- Publication counts under this code: 2 in 2024 vs 6 in 2025 (latest complete years).