Coating of a system and an associated method thereof
US-2018372151-A1 · Dec 27, 2018 · US
Coated valve members or valve-seats
Coated valve members or valve-seats · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F01L3/04 |
| Official title | Coated valve members or valve-seats |
| Display label | Coated valve members or valve-seats |
| Total patents | 194 |
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 | 15 |
| 2016 | 21 |
| 2017 | 17 |
| 2018 | 17 |
| 2019 | 19 |
| 2020 | 28 |
| 2021 | 27 |
| 2022 | 16 |
| 2023 | 16 |
| 2024 | 8 |
| 2025 | 7 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing clad layer and device for producing the same
US-2018272472-A1 · Sep 27, 2018 · US
Method of producing clad layer and device for producing the same
US-2018272471-A1 · Sep 27, 2018 · US
Combustion engine components with dynamic thermal insulation coating and method of making and using such a coating
US-2018216524-A1 · Aug 2, 2018 · US
Diamond like carbon (dlc) coating for ethanol-blended fuel injector applications
US-2018216593-A1 · Aug 2, 2018 · US
Cobalt-based cladding alloy for engine valve and engine
US-2018066342-A1 · Mar 8, 2018 · US
Direct injection engine
US-2018038306-A1 · Feb 8, 2018 · US
Spray coating film, engine having the spray coating film and film-forming method of the spray coating film
US-9840982-B2 · Dec 12, 2017 · US
Engine and piston
US-9822728-B2 · Nov 21, 2017 · US
Fuel injector for an internal combustion engine
US-2017321645-A1 · Nov 9, 2017 · US
Cladding alloy powder and method for producing engine valve using the same
US-2017297149-A1 · Oct 19, 2017 · US
Hollow poppet valve
US-9790822-B2 · Oct 17, 2017 · US
Internal combustion engine
US-2017292470-A1 · Oct 12, 2017 · US
Method of Making a Valve Stem Seal with Formable Retainer Tabs
US-2017291268-A1 · Oct 12, 2017 · US
Heat-resistant member provided with heat-shielding coating, and method for manufacturing same
US-2017284333-A1 · Oct 5, 2017 · US
Wear-resistant copper-base alloy
US-2017253950-A1 · Sep 7, 2017 · US
Metallic hollow valve for an internal combustion engine of a utility motor vehicle
US-2017204752-A1 · Jul 20, 2017 · US
Valve for internal combustion engines and method for obtaining a valve
US-9683466-B2 · Jun 20, 2017 · US
DLC film coating and coated valve lifter
US-9657384-B2 · May 23, 2017 · US
Method and appratus for reducing emissions and/or reducing friction in an internal combusition engine
US-2017122147-A1 · May 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L3/04?
- CPC F01L3/04 is the Cooperative Patent Classification code for “Coated valve members or valve-seats.”
- How many patents are filed under CPC F01L3/04 (Coated valve members or valve-seats)?
- Our database includes 194 publications tagged with this CPC code.
- Is patent activity under CPC F01L3/04 growing?
- Publication counts under this code: 8 in 2024 vs 7 in 2025 (latest complete years).