Electrochemical method for fabrication of high-purity, high-conductivity corrugated waveguides
US-2024030583-A1 · Jan 25, 2024 · 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 | C25D1/02 |
| Official title | Tubes; Rings; Hollow bodies |
| Display label | Tubes; Rings; Hollow bodies |
| Total patents | 135 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 17 |
| 2017 | 11 |
| 2018 | 15 |
| 2019 | 20 |
| 2020 | 17 |
| 2021 | 22 |
| 2022 | 3 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Curved high temperature alloy sandwich panel with a truss core and fabrication method
US-10500811-B1 · Dec 10, 2019 · US
Lost wax cast vapor chamber device
US-10451356-B2 · Oct 22, 2019 · US
Duct assembly and method of forming
US-2019301293-A1 · Oct 3, 2019 · US
Duct assembly and method of forming
US-2019301037-A1 · Oct 3, 2019 · US
Non-contact strain measurement
US-10402716-B2 · Sep 3, 2019 · US
Shield
US-10309237-B2 · Jun 4, 2019 · US
Ogv electroformed heat exchangers
US-2019145264-A1 · May 16, 2019 · US
Electroformed housings and methods for making the same
US-10196750-B2 · Feb 5, 2019 · US
Additive-based electroforming manufacturing methods and metallic articles produced thereby
US-2019024251-A1 · Jan 24, 2019 · US
Sheath
US-2019017394-A1 · Jan 17, 2019 · US
Membrane template synthesis of microtube engines
US-2018347057-A1 · Dec 6, 2018 · US
Component with differing material properties
US-2018327920-A1 · Nov 15, 2018 · US
Turbine engine duct
US-2018320801-A1 · Nov 8, 2018 · US
Methods of forming a strengthened component
US-2018312987-A1 · Nov 1, 2018 · US
Method of manufacturing combustor of rocket engine, combustor of rocket engine and rocket engine
US-2018281064-A1 · Oct 4, 2018 · US
In-situ balancing of plated polymers
US-10049318-B2 · Aug 14, 2018 · US
Method for manufacturing a miniaturized electrochemical cell and a miniaturized electrochemical cell
US-2018205070-A1 · Jul 19, 2018 · US
Electrodeposition of metal microstructures
US-10006134-B1 · Jun 26, 2018 · US
Lost wax cast vapor chamber device
US-2018164042-A1 · Jun 14, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25D1/02?
- CPC C25D1/02 is the Cooperative Patent Classification code for “Tubes; Rings; Hollow bodies.”
- How many patents are filed under CPC C25D1/02 (Tubes; Rings; Hollow bodies)?
- Our database includes 135 publications tagged with this CPC code.
- Is patent activity under CPC C25D1/02 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).