Asymmetric flow path topology
US-2022364800-A1 · Nov 17, 2022 · US
with outside means integral with the tubular element and inside means integral with the tubular element (F28F1/424 takes precedence)
with outside means integral with the tubular element and inside means integral with the tubular element (F28F1/424 takes precedence) · 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 | F28F1/422 |
| Official title | {with outside means integral with the tubular element and inside means integral with the tubular element (F28F1/424 takes precedence)} |
| Display label | with outside means integral with the tubular element and inside means integral with the tubular element (F28F1/424 takes precedence) |
| Total patents | 98 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 6 |
| 2017 | 10 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 4 |
| 2021 | 15 |
| 2022 | 11 |
| 2023 | 8 |
| 2024 | 11 |
| 2025 | 12 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Asymmetric flow path topology
US-11397059-B2 · Jul 26, 2022 · US
Monobloc assembly for a device which can carry out transfer of heat
US-2022184522-A1 · Jun 16, 2022 · US
Heat Transfer Tube
US-2022146214-A1 · May 12, 2022 · US
Heat exchanger riblet and turbulator features for improved manufacturability and performance
US-11306979-B2 · Apr 19, 2022 · US
Dimpled heat exchanger tube
US-2021302108-A1 · Sep 30, 2021 · US
Directed energy deposition of heat exchange fins
US-2021270544-A1 · Sep 2, 2021 · US
Compliant heat exchangers, heat pipes and methods for making same
US-2021245246-A1 · Aug 12, 2021 · US
Metal heat exchanger tube
US-11073343-B2 · Jul 27, 2021 · US
Heat exchanger with varying surface roughness
US-2021180888-A1 · Jun 17, 2021 · US
Heat exchange tube, heat exchanger, and manufacturing method for heat exchange tube
US-2021172686-A1 · Jun 10, 2021 · US
Air conditioner
US-11022372-B2 · Jun 1, 2021 · US
Multi-stage microchannel heat and/or mass transfer system and method of fabrication
US-11002497-B1 · May 11, 2021 · US
Heat exchanger tube
US-10996005-B2 · May 4, 2021 · US
Condenser tubes with additional flank structure
US-10974309-B2 · Apr 13, 2021 · US
Heat exchanger tube
US-10976115-B2 · Apr 13, 2021 · US
Asymmetric Flow Path Topology
US-2021080195-A1 · Mar 18, 2021 · US
Heat exchanger tube
US-10948245-B2 · Mar 16, 2021 · US
Manufacturing a heat exchanger using a material buildup process
US-2021071962-A1 · Mar 11, 2021 · US
Pipe and wire harness
US-2021061196-A1 · Mar 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F1/422?
- CPC F28F1/422 is the Cooperative Patent Classification code for “with outside means integral with the tubular element and inside means integral with the tubular element (F28F1/424 takes precedence).”
- How many patents are filed under CPC F28F1/422 (with outside means integral with the tubular element and inside means integral with the tubular element (F28F1/424 takes precedence))?
- Our database includes 98 publications tagged with this CPC code.
- Is patent activity under CPC F28F1/422 growing?
- Publication counts under this code: 11 in 2024 vs 12 in 2025 (latest complete years).