LED DBR structure with reduced photodegradation
US-11901702-B2 · Feb 13, 2024 · US
with layers graded in composition or physical properties
with layers graded in composition or physical properties · 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 | C23C28/048 |
| Official title | {with layers graded in composition or physical properties} |
| Display label | with layers graded in composition or physical properties |
| Total patents | 343 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 24 |
| 2017 | 14 |
| 2018 | 36 |
| 2019 | 23 |
| 2020 | 49 |
| 2021 | 40 |
| 2022 | 41 |
| 2023 | 28 |
| 2024 | 33 |
| 2025 | 27 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Superalloy target
US-11866805-B2 · Jan 9, 2024 · US
Cvd coated cutting tool
US-2017342554-A1 · Nov 30, 2017 · US
Features for mitigating thermal or mechanical stress on an environmental barrier coating
US-9713912-B2 · Jul 25, 2017 · US
Piston ring
US-2017167609-A1 · Jun 15, 2017 · US
Surface-coated cutting tool in which hard coating layer exhibits excellent chipping resistance
US-2017165758-A1 · Jun 15, 2017 · US
Coating for Metal Components, Method for Coating a Metal Component, Piston for Internal Combustion Engines and Motor Vehicle
US-2017122249-A1 · May 4, 2017 · US
Steel piston for an internal combustion engine and method for its production
US-9581104-B2 · Feb 28, 2017 · US
Coated tool
US-2017043406-A1 · Feb 16, 2017 · US
Method And System For Producing Coated Steel Components
US-2017029956-A1 · Feb 2, 2017 · US
Cutting tool
US-2017029944-A1 · Feb 2, 2017 · US
Drill having a coating
US-9540726-B2 · Jan 10, 2017 · US
Ion assisted deposition top coat of rare-earth oxide
US-2016326626-A1 · Nov 10, 2016 · US
Process for coating a cylinder of an internal combustion engine and engine cylinder/liner
US-2016305014-A1 · Oct 20, 2016 · US
Rigid decorative member
US-9471040-B2 · Oct 18, 2016 · US
Alpha alumina thin film for processing difficult-to-cut material and cast iron
US-2016298232-A1 · Oct 13, 2016 · US
High performance tools exhibiting reduced crater wear in particular by dry machining operations
US-9464347-B2 · Oct 11, 2016 · US
Colored rigid decorative member
US-9464355-B2 · Oct 11, 2016 · US
Surface-coated cutting tool
US-9457407-B2 · Oct 4, 2016 · US
Article having variable composition coating
US-2016281514-A1 · Sep 29, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C28/048?
- CPC C23C28/048 is the Cooperative Patent Classification code for “with layers graded in composition or physical properties.”
- How many patents are filed under CPC C23C28/048 (with layers graded in composition or physical properties)?
- Our database includes 343 publications tagged with this CPC code.
- Is patent activity under CPC C23C28/048 growing?
- Publication counts under this code: 33 in 2024 vs 27 in 2025 (latest complete years).