Heat exchanger
US-2026022894-A1 · Jan 22, 2026 · US
the partitions being separate elements attached to header boxes · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F28F9/0217 |
| Official title | {the partitions being separate elements attached to header boxes} |
| Display label | the partitions being separate elements attached to header boxes |
| Total patents | 45 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 8 |
| 2021 | 7 |
| 2022 | 10 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2026022894-A1 · Jan 22, 2026 · US
US-12235048-B2 · Feb 25, 2025 · US
US-12152840-B2 · Nov 26, 2024 · US
US-12085347-B2 · Sep 10, 2024 · US
US-12085343-B2 · Sep 10, 2024 · US
US-11892251-B2 · Feb 6, 2024 · US
US-11668531-B2 · Jun 6, 2023 · US
US-2023168039-A1 · Jun 1, 2023 · US
US-2022357110-A1 · Nov 10, 2022 · US
US-2022349661-A1 · Nov 3, 2022 · US
US-11415375-B2 · Aug 16, 2022 · US
US-11391524-B2 · Jul 19, 2022 · US
US-2022178621-A1 · Jun 9, 2022 · US
US-11356001-B2 · Jun 7, 2022 · US
US-11346584-B2 · May 31, 2022 · US
US-11322266-B2 · May 3, 2022 · US
US-2022128308-A1 · Apr 28, 2022 · US
US-2022045575-A1 · Feb 10, 2022 · US
US-11181328-B2 · Nov 23, 2021 · US
US-11148508-B2 · Oct 19, 2021 · US
Answers are generated from the same data shown on this page.