High strength 6XXX aluminum alloys and methods of making the same
US-11920229-B2 · Mar 5, 2024 · US
with zinc
with zinc · 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 | C22C21/18 |
| Official title | with zinc |
| Display label | with zinc |
| Total patents | 213 |
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 | 11 |
| 2016 | 23 |
| 2017 | 20 |
| 2018 | 23 |
| 2019 | 29 |
| 2020 | 16 |
| 2021 | 27 |
| 2022 | 16 |
| 2023 | 18 |
| 2024 | 18 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aluminum copper lithium alloy with improved mechanical strength and toughness
US-2018363114-A1 · Dec 20, 2018 · US
Method of making a structural element for aeronautical construction comprising differential work-hardening
US-10144998-B2 · Dec 4, 2018 · US
Al alloy cast impeller for compressor and process for producing same
US-10018203-B2 · Jul 10, 2018 · US
Artificial aging of strained sheet metal for strength uniformity
US-2018127860-A1 · May 10, 2018 · US
Aluminum alloy material, aluminum alloy structure, and manufacturing method for same
US-9903008-B2 · Feb 27, 2018 · US
Cast aluminum alloy components
US-9834828-B2 · Dec 5, 2017 · US
High strength and corrosion resistant alloy for use in hvac&r systems
US-2017342536-A1 · Nov 30, 2017 · US
Isotropic plates made from aluminum-copper-lithium alloy for manufacturing aircraft fuselages
US-2017306454-A1 · Oct 26, 2017 · US
Aluminum alloy
US-9738955-B2 · Aug 22, 2017 · US
Al-Mg-Zn Alloy With Scandium For The Integral Construction Of ALM Structures
US-2017233857-A1 · Aug 17, 2017 · US
Feedstock for metal foil product and method of making thereof
US-2017233856-A1 · Aug 17, 2017 · US
Method of Thermomagnetically Processing an Aluminum Alloy
US-2017226617-A1 · Aug 10, 2017 · US
Methods of forming a workpiece made of a naturally aging alloy
US-9719150-B2 · Aug 1, 2017 · US
Method for manufacturing composite double-metal fracture splitting connecting rod
US-9695866-B2 · Jul 4, 2017 · US
Aluminum alloy laminate
US-2017182602-A1 · Jun 29, 2017 · US
Aluminum microstructure for highly shaped products and associated methods
US-2017175233-A1 · Jun 22, 2017 · US
Aluminium alloy laminated plate
US-2017173741-A1 · Jun 22, 2017 · US
High-strength 6xxx aluminum alloys and methods of making the same
US-2017175240-A1 · Jun 22, 2017 · US
High strength 6xxx aluminum alloys and methods of making the same
US-2017175239-A1 · Jun 22, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C21/18?
- CPC C22C21/18 is the Cooperative Patent Classification code for “with zinc.”
- How many patents are filed under CPC C22C21/18 (with zinc)?
- Our database includes 213 publications tagged with this CPC code.
- Is patent activity under CPC C22C21/18 growing?
- Publication counts under this code: 18 in 2024 vs 11 in 2025 (latest complete years).