Air heating apparatus
US-2022178553-A1 · Jun 9, 2022 · US
Mechanical Engineering
Mechanical Engineering · 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 | F24D3/02 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 82 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 12 |
| 2019 | 10 |
| 2020 | 16 |
| 2021 | 11 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydronic panel heating or cooling system
US-11131464-B2 · Sep 28, 2021 · US
Circulation pump assembly for a heating and/or cooling system
US-11073290-B2 · Jul 27, 2021 · US
Diagnostic method for diagnosing the correct operation of a heating and/or cooling system
US-11054150-B2 · Jul 6, 2021 · US
Water heating apparatus and method for controlling the apparatus
US-2021190377-A1 · Jun 24, 2021 · US
Combined heating and cooling system
US-2021190328-A1 · Jun 24, 2021 · US
Hot water supply device
US-2021156593-A1 · May 27, 2021 · US
Heating and hot water supply system
US-2021123606-A1 · Apr 29, 2021 · US
On-demand tankless high volume capable water heating system
US-2021116135-A1 · Apr 22, 2021 · US
Modeling method of combined heat and power optimal dispatching model
US-10982861-B2 · Apr 20, 2021 · US
Heating and hot-water-supply apparatus
US-2021102713-A1 · Apr 8, 2021 · US
Automatic firing rate control for a heat exchanger
US-10883729-B2 · Jan 5, 2021 · US
Zone control with modulating boiler
US-10865997-B2 · Dec 15, 2020 · US
System for Heating and Cooling a Room Spaced from a Wall
US-2020378618-A1 · Dec 3, 2020 · US
Pump casing for a centrifugal pump and centrifugal pump
US-10837455-B2 · Nov 17, 2020 · US
Hydraulic system
US-10830458-B2 · Nov 10, 2020 · US
Pump assembly and hydraulic system
US-10823175-B2 · Nov 3, 2020 · US
Circulation pump assembly
US-2020340684-A1 · Oct 29, 2020 · US
Heating system
US-2020240650-A1 · Jul 30, 2020 · US
Pulse modulated heating, ventilation, and air conditioning (HVAC) control
US-10712021-B2 · Jul 14, 2020 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24D3/02?
- CPC F24D3/02 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F24D3/02 (Mechanical Engineering)?
- Our database includes 82 publications tagged with this CPC code.
- Is patent activity under CPC F24D3/02 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).