Heat exchange apparatus
US-11150037-B2 · Oct 19, 2021 · US
with tubular conduits
with tubular conduits · 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 | F28D3/02 |
| Official title | with tubular conduits |
| Display label | with tubular conduits |
| Total patents | 113 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 14 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 12 |
| 2020 | 11 |
| 2021 | 17 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 17 |
| 2025 | 6 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hybrid heat exchanger apparatus and method of operating the same
US-11131507-B2 · Sep 28, 2021 · US
Guiding panel for condenser, condenser and refrigeration system
US-11098934-B2 · Aug 24, 2021 · US
Mulitlevel distribution system for evaporator
US-11073314-B2 · Jul 27, 2021 · US
Heat Exchanger Transfer Tubes
US-2021018270-A1 · Jan 21, 2021 · US
Multi-cavity tubes for air-over evaporative heat exchanger
US-2021010755-A1 · Jan 14, 2021 · US
Two-stage heavies removal in lng processing
US-2020386474-A1 · Dec 10, 2020 · US
Refrigerant management in HVAC systems
US-10859297-B2 · Dec 8, 2020 · US
Heat exchanger assembly and method of assembly thereof
US-2020378695-A1 · Dec 3, 2020 · US
Heat exchanger for a vapor compression system
US-10830510-B2 · Nov 10, 2020 · US
Ultra narrow channel ultra low refrigerant charge evaporative condenser
US-2020340748-A1 · Oct 29, 2020 · US
Controllable liquid distributor of a coiled-tube heat exchanger for realizing different liquid loadings
US-2020318912-A1 · Oct 8, 2020 · US
Refrigeration cycle of refrigerator
US-10655894-B2 · May 19, 2020 · US
Refrigerant riser for evaporator
US-10591191-B2 · Mar 17, 2020 · US
Methods and systems to manage refrigerant in a heat exchanger
US-10571168-B2 · Feb 25, 2020 · US
Multi-cavity tubes for air-over evaporative heat exchanger
US-10571198-B2 · Feb 25, 2020 · US
Indirect heat exchanger
US-10571197-B2 · Feb 25, 2020 · US
Refrigeration cycle comprising a common condensing section for two separate evaporator-compressor circuits
US-10520237-B2 · Dec 31, 2019 · US
Heat exchanger with water box
US-10508843-B2 · Dec 17, 2019 · US
Asymmetric evaporator
US-10429106-B2 · Oct 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28D3/02?
- CPC F28D3/02 is the Cooperative Patent Classification code for “with tubular conduits.”
- How many patents are filed under CPC F28D3/02 (with tubular conduits)?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC F28D3/02 growing?
- Publication counts under this code: 17 in 2024 vs 6 in 2025 (latest complete years).