Coating for metal components, method for coating a metal component, piston for internal combustion engines and motor vehicle
US-10458361-B2 · Oct 29, 2019 · US
with at least one DLC or an amorphous carbon based layer, the layer being doped or not
with at least one DLC or an amorphous carbon based layer, the layer being doped or not · 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 | C23C28/343 |
| Official title | {with at least one DLC or an amorphous carbon based layer, the layer being doped or not} |
| Display label | with at least one DLC or an amorphous carbon based layer, the layer being doped or not |
| Total patents | 160 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 10 |
| 2017 | 13 |
| 2018 | 13 |
| 2019 | 14 |
| 2020 | 24 |
| 2021 | 19 |
| 2022 | 12 |
| 2023 | 14 |
| 2024 | 14 |
| 2025 | 8 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Superlubricious carbon films derived from natural gas
US-2019314803-A1 · Oct 17, 2019 · US
Method of treating composite piston pin and surface treated composite piston pin
US-10400324-B2 · Sep 3, 2019 · US
Hydrogen-Free Carbon Coating Having Zirconium Adhesive Layer
US-2019249310-A1 · Aug 15, 2019 · US
Method of treating composite piston pin and surface treated composite piston pin
US-2019242005-A1 · Aug 8, 2019 · US
Vehicle rack-and-pinion mechanism
US-2019210635-A1 · Jul 11, 2019 · US
Coating process and coating for press-fit contact
US-10348017-B2 · Jul 9, 2019 · US
Sliding element, in particular piston ring
US-2019128420-A1 · May 2, 2019 · US
Method for coating an object by means of a multilayer system with a nickel-phosphorus alloy
US-2019055664-A1 · Feb 21, 2019 · US
Layered metal-graphene-metal laminate structure
US-2018330842-A1 · Nov 15, 2018 · US
Piston ring and manufacturing method therefor
US-10087513-B2 · Oct 2, 2018 · US
Abrasion-resistant surface finishes on metal enclosures
US-2018263130-A1 · Sep 13, 2018 · US
Sliding element, in particular piston ring
US-10072756-B2 · Sep 11, 2018 · US
Sliding member and piston ring
US-2018245200-A1 · Aug 30, 2018 · US
Color-treated substrate and color treatment method therefor
US-2018202050-A1 · Jul 19, 2018 · US
Piston ring and its production method
US-10006547-B2 · Jun 26, 2018 · US
Method for producing a tribologically distressed laminate, a laminate and use of an organometallic compound for producing a functional layer of the laminate
US-10000846-B2 · Jun 19, 2018 · US
Linear compressor and method of manufacturing a linear compressor
US-9989052-B2 · Jun 5, 2018 · US
Coatings for forming tools
US-9968980-B2 · May 15, 2018 · US
Substrate having an intermediate coating and a carbon coating
US-2018127869-A1 · May 10, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C28/343?
- CPC C23C28/343 is the Cooperative Patent Classification code for “with at least one DLC or an amorphous carbon based layer, the layer being doped or not.”
- How many patents are filed under CPC C23C28/343 (with at least one DLC or an amorphous carbon based layer, the layer being doped or not)?
- Our database includes 160 publications tagged with this CPC code.
- Is patent activity under CPC C23C28/343 growing?
- Publication counts under this code: 14 in 2024 vs 8 in 2025 (latest complete years).