Processing apparatus of trunk lid hinge arm, processing method of trunk lid hinge arm, and trunk lid hinge arm
US-2025387824-A1 · Dec 25, 2025 · US
hinges, e.g. door hinge plates
hinges, e.g. door hinge plates · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B21D53/40 |
| Official title | hinges, e.g. door hinge plates |
| Display label | hinges, e.g. door hinge plates |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 4 |
| 2021 | 1 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hinge bracket assembly
US-2025327348-A1 · Oct 23, 2025 · US
Hinge bracket assembly
US-12320176-B2 · Jun 3, 2025 · US
Hinge bracket assembly
US-2024344375-A1 · Oct 17, 2024 · US
Hinge bracket assembly
US-11970895-B2 · Apr 30, 2024 · US
Method of creating mechanical strength and industrial design aesthetics for hinge area of computing devices
US-11914431-B2 · Feb 27, 2024 · US
Furniture fitting and method for producing a furniture fitting
US-2023380590-A1 · Nov 30, 2023 · US
Hinged waterbox cover
US-11635265-B2 · Apr 25, 2023 · US
Hinge with free-stop function
US-11627209-B2 · Apr 11, 2023 · US
Method of Creating Mechanical Strength and Industrial Design Aesthetics for Hinge Area of Computing Devices
US-2023023895-A1 · Jan 26, 2023 · US
Hinge bracket assembly
US-2021062561-A1 · Mar 4, 2021 · US
Hinge with free-stop function
US-10501973-B2 · Dec 10, 2019 · US
Hinge with free-stop function
US-2019211600-A1 · Jul 11, 2019 · US
Hinged waterbox cover
US-2019170454-A1 · Jun 6, 2019 · US
Hinged waterbox cover method
US-10203168-B2 · Feb 12, 2019 · US
Hinge for a multiple operating mode computing device
US-10013021-B2 · Jul 3, 2018 · US
Method for manufacturing hinge for refrigerator
US-9885204-B2 · Feb 6, 2018 · US
Hinge with free-stop function
US-2017356226-A1 · Dec 14, 2017 · US
Vehicle door hinge and method for manufacturing same
US-2017321463-A1 · Nov 9, 2017 · US
Hinge for refrigerator and method for manufacturing the same
US-9556657-B2 · Jan 31, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21D53/40?
- CPC B21D53/40 is the Cooperative Patent Classification code for “hinges, e.g. door hinge plates.”
- How many patents are filed under CPC B21D53/40 (hinges, e.g. door hinge plates)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC B21D53/40 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).