Packed bed column with stacked packed channels for processing gas and method thereof
US-2026084107-A1 · Mar 26, 2026 · US
using granular particles
using granular particles · 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 | F28D19/02 |
| Official title | using granular particles |
| Display label | using granular particles |
| Total patents | 28 |
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 | 3 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Moving-bed particle heat exchanger
US-12196495-B2 · Jan 14, 2025 · US
Flow rate adjustment device
US-2024344779-A1 · Oct 17, 2024 · US
Heat Exchanger for Controlling the Temperature of a Solid Substance
US-2024110750-A1 · Apr 4, 2024 · US
Particle-based thermal energy storage systems
US-11808523-B2 · Nov 7, 2023 · US
Direct contact particle-fluid heat exchanger
US-11674757-B1 · Jun 13, 2023 · US
Heat recover apparatus, system and method of using the same
US-11560880-B2 · Jan 24, 2023 · US
Methods and systems for thermal energy storage and their use in buildings applications
US-11480395-B2 · Oct 25, 2022 · US
Moving-bed particle heat exchanger
US-2022299270-A1 · Sep 22, 2022 · US
Methods and systems for thermal energy storage and their use in buildings applications
US-2022034598-A1 · Feb 3, 2022 · US
Particle-based thermal energy storage systems
US-2022034600-A1 · Feb 3, 2022 · US
Particle-based thermal energy storage systems
US-11181326-B2 · Nov 23, 2021 · US
Energy storage device
US-11156410-B2 · Oct 26, 2021 · US
Heat recover apparatus, system and method of using the same
US-2021277877-A1 · Sep 9, 2021 · US
Energy storage device
US-2020149825-A1 · May 14, 2020 · US
Particle-based thermal energy storage systems
US-2020124356-A1 · Apr 23, 2020 · US
Air cooling day cycle-based processing and systems
US-10488120-B2 · Nov 26, 2019 · US
Use of a phase change material system
US-2018340740-A1 · Nov 29, 2018 · US
Phase change materials for refrigeration and ice making
US-10107542-B2 · Oct 23, 2018 · US
Air cooling day cycle-based processing and systems
US-2018231331-A1 · Aug 16, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28D19/02?
- CPC F28D19/02 is the Cooperative Patent Classification code for “using granular particles.”
- How many patents are filed under CPC F28D19/02 (using granular particles)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC F28D19/02 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).