Multi-pass and multi-slab folded microchannel heat exchanger
US-2017343288-A1 · Nov 30, 2017 · US
with multiple holes
with multiple holes · 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 | F28F9/0273 |
| Official title | {with multiple holes} |
| Display label | with multiple holes |
| Total patents | 243 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 22 |
| 2017 | 27 |
| 2018 | 29 |
| 2019 | 19 |
| 2020 | 30 |
| 2021 | 19 |
| 2022 | 22 |
| 2023 | 17 |
| 2024 | 16 |
| 2025 | 19 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger with heat resistant center body
US-2017306794-A1 · Oct 26, 2017 · US
Refrigerant diverter
US-2017299284-A1 · Oct 19, 2017 · US
Low refrigerant charge microchannel heat exchanger
US-2017276411-A1 · Sep 28, 2017 · US
Flat plate heat exchanger having fluid distributor inside manifold
US-9772145-B2 · Sep 26, 2017 · US
Air conditioning system and heat exchanger
US-9751378-B2 · Sep 5, 2017 · US
Shell and tube heat exchanger with a vapor port
US-9746256-B2 · Aug 29, 2017 · US
Refrigerant evaporator
US-2017234587-A1 · Aug 17, 2017 · US
Channel guide distributor
US-2017227303-A1 · Aug 10, 2017 · US
Thermal stress relief for heat sinks
US-2017205157-A1 · Jul 20, 2017 · US
Plate heat exchanger comprising structural reinforcements for a turbine engine
US-2017131035-A1 · May 11, 2017 · US
Absorber with a spiral plate exchanger with a homogeneous fluid supply
US-9644871-B2 · May 9, 2017 · US
Microchanel heat exchanger evaporator
US-2017089642-A1 · Mar 30, 2017 · US
Plate heat exchanger
US-2017082376-A1 · Mar 23, 2017 · US
Heat exchanger assembly having a distributor tube retainer tab
US-9581397-B2 · Feb 28, 2017 · US
Heat exchanger
US-9574828-B2 · Feb 21, 2017 · US
Heat exchanger for cooled cooling air with adjustable damper
US-2017044980-A1 · Feb 16, 2017 · US
Evaporator having a hybrid expansion device for improved aliquoting of refrigerant
US-9568225-B2 · Feb 14, 2017 · US
Heat exchanger
US-2016377347-A1 · Dec 29, 2016 · US
Refrigerant guiding pipe and heat exchanger having refrigerant guiding pipe
US-9528778-B2 · Dec 27, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F9/0273?
- CPC F28F9/0273 is the Cooperative Patent Classification code for “with multiple holes.”
- How many patents are filed under CPC F28F9/0273 (with multiple holes)?
- Our database includes 243 publications tagged with this CPC code.
- Is patent activity under CPC F28F9/0273 growing?
- Publication counts under this code: 16 in 2024 vs 19 in 2025 (latest complete years).