Induced draft heat rejection equipment with top mounted backward-curved centrifugal fans
US-12474120-B2 · Nov 18, 2025 · 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 | F28C1/04 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Adiabatic pre-cooling redistribution system
US-2025172358-A1 · May 29, 2025 · US
Adiabatic pre-cooling redistribution system
US-12044485-B2 · Jul 23, 2024 · US
Magnetically modulated computational cytometer and methods of use
US-12038370-B2 · Jul 16, 2024 · US
Heat transfer apparatus and method
US-2023417494-A1 · Dec 28, 2023 · US
Direct heat exchange fill
US-2023105162-A1 · Apr 6, 2023 · US
Induced draft heat rejection equipment with top mounted backward-curved centrifugal fans
US-2023047198-A1 · Feb 16, 2023 · US
Adiabatic pre-cooling redistribution system
US-2022316826-A1 · Oct 6, 2022 · US
Magnetically modulated computational cytometer and methods of use
US-2022260481-A1 · Aug 18, 2022 · US
Evaporative cooling systems and methods of using
US-11340019-B2 · May 24, 2022 · US
Automated control of heat exchanger operation
US-11092394-B2 · Aug 17, 2021 · US
Microbubble generator and cooling water circulation system equipped with same
US-2020398231-A1 · Dec 24, 2020 · US
Automated control of heat exchanger operation
US-2020217602-A1 · Jul 9, 2020 · US
Evaporative cooling systems and methods of using
US-2020158440-A1 · May 21, 2020 · US
Cooling tower water distribution system
US-10627176-B2 · Apr 21, 2020 · US
Automated control of heat exchanger operation
US-10619953-B2 · Apr 14, 2020 · US
Cooling tower water distribution system
US-2019346221-A1 · Nov 14, 2019 · US
Cooling tower water distribution system
US-10415902-B2 · Sep 17, 2019 · US
Cooling tower integrated inlet louver fill
US-10386135-B2 · Aug 20, 2019 · US
Automated control of heat exchanger operation
US-2019145721-A1 · May 16, 2019 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28C1/04?
- CPC F28C1/04 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F28C1/04 (Mechanical Engineering)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC F28C1/04 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).