Heat exchanger for severe service conditions
US-11187471-B2 · Nov 30, 2021 · US
the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube
the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube · 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 | F28D7/1669 |
| Official title | {the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube} |
| Display label | the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube |
| 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 | 10 |
| 2016 | 7 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 11 |
| 2020 | 9 |
| 2021 | 13 |
| 2022 | 10 |
| 2023 | 11 |
| 2024 | 8 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger tubes
US-2021348855-A1 · Nov 11, 2021 · US
Baffles for thermal transfer devices
US-11162709-B2 · Nov 2, 2021 · US
Shell-and-tube heat exchanger
US-11156404-B2 · Oct 26, 2021 · US
Circular crossflow heat exchanger
US-2021270534-A1 · Sep 2, 2021 · US
Exhaust assembly temperature regulation
US-11105249-B2 · Aug 31, 2021 · US
Heat exchanger tubes
US-11073344-B2 · Jul 27, 2021 · US
Block style heat exchanger for heat pipe reactor
US-2021199383-A1 · Jul 1, 2021 · US
Baffles For Thermal Transfer Devices
US-2021190375-A1 · Jun 24, 2021 · US
Cooling system
US-2021114742-A1 · Apr 22, 2021 · US
Exhaust assembly temperature regulation
US-2021062705-A1 · Mar 4, 2021 · US
Heat exchanger tubes
US-2020340760-A1 · Oct 29, 2020 · US
Variable geometry heat exchanger
US-2020318913-A1 · Oct 8, 2020 · US
Shell-and-tube heat exchanger
US-2020292238-A1 · Sep 17, 2020 · US
Heat exchanger
US-2020284531-A1 · Sep 10, 2020 · US
Additively manufactured heat exchanger
US-10684080-B2 · Jun 16, 2020 · US
Temperature control of a pumped gas flow
US-2020173444-A1 · Jun 4, 2020 · US
Heat exchange apparatus
US-2020132385-A1 · Apr 30, 2020 · US
Systems and methods for heat exchanger tubes having internal flow features
US-10584923-B2 · Mar 10, 2020 · US
Autonomous self-powered system for removing thermal energy from pools of liquid heated by radioactive materials, and method of the same
US-2020049030-A1 · Feb 13, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28D7/1669?
- CPC F28D7/1669 is the Cooperative Patent Classification code for “the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube.”
- How many patents are filed under CPC F28D7/1669 (the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube)?
- Our database includes 98 publications tagged with this CPC code.
- Is patent activity under CPC F28D7/1669 growing?
- Publication counts under this code: 8 in 2024 vs 7 in 2025 (latest complete years).