Heat sound converter
US-2025029593-A1 · Jan 23, 2025 · US
Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium {(F28D15/02 takes precedence)} · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F28D19/00 |
| Official title | Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium {(F28D15/02 takes precedence)} |
| Display label | Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium {(F28D15/02 takes precedence)} |
| Total patents | 27 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 4 |
| 2024 | 2 |
| 2025 | 2 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025029593-A1 · Jan 23, 2025 · US
US-2025006390-A1 · Jan 2, 2025 · US
US-12046382-B2 · Jul 23, 2024 · US
US-11895380-B2 · Feb 6, 2024 · US
US-11518212-B2 · Dec 6, 2022 · US
US-2022116525-A1 · Apr 14, 2022 · US
US-2022057146-A1 · Feb 24, 2022 · US
US-2022044833-A1 · Feb 10, 2022 · US
US-11205523-B2 · Dec 21, 2021 · US
US-10808947-B2 · Oct 20, 2020 · US
US-2020176140-A1 · Jun 4, 2020 · US
US-10535437-B2 · Jan 14, 2020 · US
US-10471803-B2 · Nov 12, 2019 · US
US-2019263220-A1 · Aug 29, 2019 · US
US-10107542-B2 · Oct 23, 2018 · US
US-9921009-B2 · Mar 20, 2018 · US
US-2017314789-A1 · Nov 2, 2017 · US
US-9784475-B2 · Oct 10, 2017 · US
US-2017210196-A1 · Jul 27, 2017 · US
US-9658005-B2 · May 23, 2017 · US
Answers are generated from the same data shown on this page.