Heat exchanger
US-12487035-B2 · Dec 2, 2025 · US
in serpentine form
in serpentine form · 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 | F24H1/41 |
| Official title | in serpentine form |
| Display label | in serpentine form |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger and water heating device including the same
US-12253311-B2 · Mar 18, 2025 · US
Water heater
US-2024318868-A1 · Sep 26, 2024 · US
Heat Exchanger
US-2024271885-A1 · Aug 15, 2024 · US
Heat exchanger and manufacturing method therefor
US-11779994-B2 · Oct 10, 2023 · US
Heat exchanger and water heating device including the same
US-11624526-B2 · Apr 11, 2023 · US
Heat exchanger and water heating device including the same
US-2023026734-A1 · Jan 26, 2023 · US
Heat exchanger and manufacturing method therefor
US-2022410247-A1 · Dec 29, 2022 · US
Heat exchanger and water heating apparatus
US-11454421-B2 · Sep 27, 2022 · US
Heat exchanger and manufacturing method therefor
US-11359838-B2 · Jun 14, 2022 · US
Heat exchanger and hot water apparatus
US-11293702-B2 · Apr 5, 2022 · US
Heat exchanger and hot water apparatus
US-11287158-B2 · Mar 29, 2022 · US
Heat exchange apparatus and method
US-2021389061-A1 · Dec 16, 2021 · US
Heat exchanger and water heating device including same
US-2021310741-A1 · Oct 7, 2021 · US
Heat exchanger and water heating device including the same
US-2021262697-A1 · Aug 26, 2021 · US
Heat exchanger and manufacturing method therefor
US-11054195-B2 · Jul 6, 2021 · US
Heat exchanger and water heating apparatus
US-2021190374-A1 · Jun 24, 2021 · US
Heat exchange device and heat source machine
US-10890356-B2 · Jan 12, 2021 · US
Condensing combustion apparatus
US-10823455-B2 · Nov 3, 2020 · US
Heat Exchanger and Hot Water Apparatus
US-2020208923-A1 · Jul 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24H1/41?
- CPC F24H1/41 is the Cooperative Patent Classification code for “in serpentine form.”
- How many patents are filed under CPC F24H1/41 (in serpentine form)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F24H1/41 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).