Hard and Lubricious Valve Surfaces, Material Compositions and Sequences of Manufacturing
US-2020141509-A1 · May 7, 2020 · US
with at least one carbide layer
with at least one carbide layer · 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 | C23C28/341 |
| Official title | {with at least one carbide layer} |
| Display label | with at least one carbide layer |
| Total patents | 175 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 9 |
| 2017 | 12 |
| 2018 | 13 |
| 2019 | 12 |
| 2020 | 13 |
| 2021 | 20 |
| 2022 | 21 |
| 2023 | 19 |
| 2024 | 21 |
| 2025 | 20 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Grain-oriented electrical steel sheet and production method for grain-oriented electrical steel sheet
US-2019390309-A1 · Dec 26, 2019 · US
Fabrication of metallic optical metasurfaces
US-2019301025-A1 · Oct 3, 2019 · US
Hydrogen-Free Carbon Coating Having Zirconium Adhesive Layer
US-2019249310-A1 · Aug 15, 2019 · US
Cold spray metallic coating and methods
US-2019233946-A1 · Aug 1, 2019 · US
Composite article having layer with co-continuous material regions
US-10309018-B2 · Jun 4, 2019 · US
Coated Components of Solar Power Systems and Methods of Making the Same
US-2019157471-A1 · May 23, 2019 · US
Sliding element, in particular piston ring
US-2019128420-A1 · May 2, 2019 · US
Process for producing a brake disk and brake disk
US-10274032-B2 · Apr 30, 2019 · US
Diffusion barrier layers for ceramic matrix composites
US-10260139-B2 · Apr 16, 2019 · US
Hard film and method for forming same, and die for use in hot forming of steel sheet
US-10233530-B2 · Mar 19, 2019 · US
Nanoparticle-reinforced composites and methods of manufacture and use
US-10214801-B2 · Feb 26, 2019 · US
Layer and layer system, as well as bipolar plate, fuel cell and electrolyser
US-2019051913-A1 · Feb 14, 2019 · US
KINETICALLY APPLIED GRADATED Zr-Al-C OR Ti-Al-C CERAMIC OR AMORPHOUS OR SEMI-AMORPHOUS STAINLESS STEEL WITH NUCLEAR GRADE ZIRCONIUM ALLOY METAL STRUCTURE
US-2018371601-A1 · Dec 27, 2018 · US
Neural interface probe employing amorphous silicon carbide
US-2018368712-A1 · Dec 27, 2018 · US
Corrosion resistant and low embrittlement aluminum alloy coatings on steel by magnetron sputtering
US-2018355470-A1 · Dec 13, 2018 · US
Timepiece Part, And Timepieces
US-2018275609-A1 · Sep 27, 2018 · US
Timepiece part, and timepiece
US-2018267476-A1 · Sep 20, 2018 · US
Surface-coated titanium carbonitride-based cermet cutting tool having excellent chipping resistance
US-10076789-B2 · Sep 18, 2018 · US
Sliding element, in particular piston ring
US-10072756-B2 · Sep 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C28/341?
- CPC C23C28/341 is the Cooperative Patent Classification code for “with at least one carbide layer.”
- How many patents are filed under CPC C23C28/341 (with at least one carbide layer)?
- Our database includes 175 publications tagged with this CPC code.
- Is patent activity under CPC C23C28/341 growing?
- Publication counts under this code: 21 in 2024 vs 20 in 2025 (latest complete years).