Plated tubular lattice structure
US-9789664-B2 · Oct 17, 2017 · US
Tubes; Rings; Hollow bodies
Tubes; Rings; Hollow bodies · 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 | C25D7/04 |
| Official title | Tubes; Rings; Hollow bodies |
| Display label | Tubes; Rings; Hollow bodies |
| Total patents | 298 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 38 |
| 2017 | 31 |
| 2018 | 21 |
| 2019 | 34 |
| 2020 | 29 |
| 2021 | 20 |
| 2022 | 25 |
| 2023 | 28 |
| 2024 | 33 |
| 2025 | 16 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cylinder liner for insertion into an engine block, and engine block
US-2017254287-A1 · Sep 7, 2017 · US
Nebulizer mesh and production method thereof
US-9700685-B2 · Jul 11, 2017 · US
Plating solution for threaded connection for pipe or tube and producing method of threaded connection for pipe or tube
US-2017051421-A1 · Feb 23, 2017 · US
Property enhancement of surfaces by electrolytic micro arc oxidation
US-2017029959-A1 · Feb 2, 2017 · US
Nebulizer mesh and production method thereof
US-2016375203-A1 · Dec 29, 2016 · US
Feedback control of dimensions in nanopore and nanofluidic devices
US-2016355942-A1 · Dec 8, 2016 · US
TiO2 APPLICATION AS BONDCOAT FOR CYLINDER BORE THERMAL SPRAY
US-2016356242-A1 · Dec 8, 2016 · US
Method for coating pipe segments
US-9499918-B2 · Nov 22, 2016 · US
Surface-treated metal sheet and process for producing formed article from the surface-treated metal sheet
US-9498933-B2 · Nov 22, 2016 · US
System and method for preventing powder depletion/contamination during consolidation process
US-2016332230-A1 · Nov 17, 2016 · US
Coated stainless steel member
US-2016305033-A1 · Oct 20, 2016 · US
Electroplating apparatus for steel pipes
US-2016298251-A1 · Oct 13, 2016 · US
Torque wrench having improved wear properties
US-9453288-B2 · Sep 27, 2016 · US
Apparatus for use in an electroetching or electrodeposition process and an electroetching or electrodeposition process
US-2016258076-A1 · Sep 8, 2016 · US
Counterfeit proofing of plated polymers
US-2016253586-A1 · Sep 1, 2016 · US
Endless belt for fixing, fixing device, and method for producing endless belt for fixing
US-9423739-B2 · Aug 23, 2016 · US
Lithium battery with reference electrode plated on an interior surface of a neutral metal can
US-9419313-B2 · Aug 16, 2016 · US
Inexpensive automotive member and feed oil pipe, exhibiting excellent salt corrosion resistance
US-2016230261-A1 · Aug 11, 2016 · US
Pipe connector and method
US-2016186332-A1 · Jun 30, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25D7/04?
- CPC C25D7/04 is the Cooperative Patent Classification code for “Tubes; Rings; Hollow bodies.”
- How many patents are filed under CPC C25D7/04 (Tubes; Rings; Hollow bodies)?
- Our database includes 298 publications tagged with this CPC code.
- Is patent activity under CPC C25D7/04 growing?
- Publication counts under this code: 33 in 2024 vs 16 in 2025 (latest complete years).