A heat exchanger and a method of producing a matrix for a recuperative heat exchanger
US-2025180301-A1 · Jun 5, 2025 · US
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Rotors; Assemblies of heat absorbing masses
Rotors; Assemblies of heat absorbing masses · 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 | F28D19/042 |
| Official title | {Rotors; Assemblies of heat absorbing masses} |
| Display label | Rotors; Assemblies of heat absorbing masses |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 7 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat recovery ventilator
US-2025085063-A1 · Mar 13, 2025 · US
Heat recovery ventilator
US-12152836-B2 · Nov 26, 2024 · US
Heat recovery ventilator
US-12061050-B2 · Aug 13, 2024 · US
Energy exchange system for conditioning air in an enclosed structure
US-11761645-B2 · Sep 19, 2023 · US
Projector
US-11175571-B2 · Nov 16, 2021 · US
Energy exchange system for conditioning air in an enclosed structure
US-2021332993-A1 · Oct 28, 2021 · US
Heat recovery ventilator
US-2021254901-A1 · Aug 19, 2021 · US
Heat recovery wheel and method of its forming
US-2021231386-A1 · Jul 29, 2021 · US
Heat recovery ventilator
US-2021199387-A1 · Jul 1, 2021 · US
Energy exchange system for conditioning air in an enclosed structure
US-10928082-B2 · Feb 23, 2021 · US
Projector
US-2021011361-A1 · Jan 14, 2021 · US
Refrigerator appliances and sealed refrigeration systems therefor
US-10830511-B2 · Nov 10, 2020 · US
Refrigerator appliances and sealed refrigeration systems therefor
US-2019264960-A1 · Aug 29, 2019 · US
Methods of forming a thermal storage unit
US-10259064-B2 · Apr 16, 2019 · US
Energy recovery ventilation control system
US-10082304-B2 · Sep 25, 2018 · US
Energy recovery ventilator unit with offset and overlapping enthalpy wheels
US-9835353-B2 · Dec 5, 2017 · US
Energy exchange system for conditioning air in an enclosed structure
US-9810439-B2 · Nov 7, 2017 · US
Energy exchange system for conditioning air in an enclosed structure
US-2016290666-A1 · Oct 6, 2016 · US
Methods of forming a thermal storage unit
US-2016016246-A1 · Jan 21, 2016 · US