Powder regulating device
US-2024316648-A1 · Sep 26, 2024 · US
Hoppers
Hoppers · 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 | B22F12/52 |
| Official title | Hoppers |
| Display label | Hoppers |
| Total patents | 702 |
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 | 23 |
| 2016 | 40 |
| 2017 | 44 |
| 2018 | 62 |
| 2019 | 85 |
| 2020 | 85 |
| 2021 | 113 |
| 2022 | 91 |
| 2023 | 60 |
| 2024 | 51 |
| 2025 | 42 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Techniques for powder delivery in additive fabrication and related systems and methods
US-2024017493-A1 · Jan 18, 2024 · US
Additive manufacturing apparatus and method for large components
US-2016368050-A1 · Dec 22, 2016 · US
Additively manufactured hotspot portion of a turbine engine component having heat resistant properties and method of manufacture
US-2016370007-A1 · Dec 22, 2016 · US
Method and apparatus for additive manufacturing
US-9505172-B2 · Nov 29, 2016 · US
Additive manufacturing system and method of operation
US-2016332371-A1 · Nov 17, 2016 · US
Monitoring material soldification byproducts during additive manufacturing
US-2016332381-A1 · Nov 17, 2016 · US
Apparatuses, systems and methods for three-dimensional printing
US-9486878-B2 · Nov 8, 2016 · US
A workpiece manufactured from an additive manufacturing system having a particle separator and method of operation
US-2016319678-A1 · Nov 3, 2016 · US
Particle separator for an additive manufacturing system and method of operation
US-2016318072-A1 · Nov 3, 2016 · US
Systems and processes for distributing material during additive manufacturing
US-2016311023-A1 · Oct 27, 2016 · US
Method and apparatus for additive manufacturing
US-9468973-B2 · Oct 18, 2016 · US
Apparatuses, systems and methods for three-dimensional printing
US-2016297007-A1 · Oct 13, 2016 · US
Apparatuses, systems and methods for three-dimensional printing
US-2016297006-A1 · Oct 13, 2016 · US
Laser-produced porous structure
US-9456901-B2 · Oct 4, 2016 · US
Apparatuses, systems and methods for three-dimensional printing
US-9403235-B2 · Aug 2, 2016 · US
Device and method for the manufacture or repair of a three-dimensional object
US-2016214173-A1 · Jul 28, 2016 · US
Apparatuses, systems and methods for three-dimensional printing
US-9399256-B2 · Jul 26, 2016 · US
Apparatuses, Systems and Methods for Three-Dimensional Printing
US-2016207109-A1 · Jul 21, 2016 · US
Energy beam position verification
US-2016202043-A1 · Jul 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B22F12/52?
- CPC B22F12/52 is the Cooperative Patent Classification code for “Hoppers.”
- How many patents are filed under CPC B22F12/52 (Hoppers)?
- Our database includes 702 publications tagged with this CPC code.
- Is patent activity under CPC B22F12/52 growing?
- Publication counts under this code: 51 in 2024 vs 42 in 2025 (latest complete years).