Reinforcement structure
US-2025162660-A1 · May 22, 2025 · US
hollow-walled
hollow-walled · 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 | B29C66/7252 |
| Official title | {hollow-walled} |
| Display label | hollow-walled |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 7 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reinforcement structure
US-12233951-B2 · Feb 25, 2025 · US
Anchoring of connector element
US-11904551-B2 · Feb 20, 2024 · US
Anchoring of connector element
US-2023321922-A1 · Oct 12, 2023 · US
Plastic corrugated container with sealed edges
US-11702241-B2 · Jul 18, 2023 · US
Reinforcement structure
US-2022169317-A1 · Jun 2, 2022 · US
Method and installation for joining a cover layer to an object
US-2021162675-A1 · Jun 3, 2021 · US
Anchoring of connector element
US-2021122121-A1 · Apr 29, 2021 · US
Joint structures
US-10751932-B2 · Aug 25, 2020 · US
Thermoplastic truss structure for use in wing and rotor blade structures and methods for manufacture
US-2019330848-A1 · Oct 31, 2019 · US
Plastic corrugated container with sealed edges
US-2019270542-A1 · Sep 5, 2019 · US
Bonded part, manufacturing method of bonded part, ink tank, and ink cartridge
US-10377089-B2 · Aug 13, 2019 · US
Thermoplastic truss structure for use in wing and rotor blade structures and methods for manufacture
US-10358821-B2 · Jul 23, 2019 · US
Plastic corrugated container with sealed edges
US-10252832-B2 · Apr 9, 2019 · US
Methods and assemblies for welding a gasket to a pipe section
US-10247334-B2 · Apr 2, 2019 · US
Joint structures
US-2019022925-A1 · Jan 24, 2019 · US
Bonded part, manufacturing method of bonded part, ink tank, and ink cartridge
US-2018043626-A1 · Feb 15, 2018 · US
Composite structural element and method
US-9809018-B2 · Nov 7, 2017 · US
Plastic corrugated container with manufacturer's joint adding zero extra thickness
US-9555918-B2 · Jan 31, 2017 · US
Process for securing a micro-truss structure to a panel
US-9511540-B2 · Dec 6, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C66/7252?
- CPC B29C66/7252 is the Cooperative Patent Classification code for “hollow-walled.”
- How many patents are filed under CPC B29C66/7252 (hollow-walled)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC B29C66/7252 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).