Heat exchanger and method for producing same
US-2021080185-A1 · Mar 18, 2021 · US
the surrounding tube being closed at one end, e.g. return type (F28D7/14 takes precedence)
the surrounding tube being closed at one end, e.g. return type (F28D7/14 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 | F28D7/12 |
| Official title | the surrounding tube being closed at one end, e.g. return type (F28D7/14 takes precedence) |
| Display label | the surrounding tube being closed at one end, e.g. return type (F28D7/14 takes precedence) |
| 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 | 11 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 15 |
| 2019 | 11 |
| 2020 | 8 |
| 2021 | 14 |
| 2022 | 14 |
| 2023 | 9 |
| 2024 | 11 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flow-guiding rod, bushing and converter transformer system
US-2020395159-A1 · Dec 17, 2020 · US
Heat exchangers
US-10697708-B2 · Jun 30, 2020 · US
Dialysis system
US-10668201-B2 · Jun 2, 2020 · US
U-tube heat exchanger
US-10627166-B2 · Apr 21, 2020 · US
Apparatus for controlling the temperature of a reactor
US-10589249-B2 · Mar 17, 2020 · US
Fuel cell device
US-10573906-B2 · Feb 25, 2020 · US
Process and apparatus for cooling catalyst
US-10563932-B2 · Feb 18, 2020 · US
Heat exchanger with an internal conduit for conducting a fluid
US-10551087-B2 · Feb 4, 2020 · US
Heat exchanger unit
US-10488119-B2 · Nov 26, 2019 · US
Apparatus for controlling the temperature of a reactor
US-2019329212-A1 · Oct 31, 2019 · US
Device for cooling heat transfer solid for precisely controlling the temperature, said device optionally being associated with an endothermic or exothermic process
US-10377955-B2 · Aug 13, 2019 · US
Process and apparatus for cooling catalyst
US-2019195574-A1 · Jun 27, 2019 · US
Process and apparatus for fluidizing a catalyst bed
US-2019193041-A1 · Jun 27, 2019 · US
Process and apparatus for fluidizing a catalyst bed
US-2019193040-A1 · Jun 27, 2019 · US
Heat exchanger
US-10288353-B2 · May 14, 2019 · US
Heat exchanger unit
US-2019118617-A1 · Apr 25, 2019 · US
Coolant heating apparatus for electric vehicle
US-2019048781-A1 · Feb 14, 2019 · US
U-tube heat exchanger
US-2019033002-A1 · Jan 31, 2019 · US
Hollow chamber x-mixer heat exchanger
US-2019030503-A1 · Jan 31, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28D7/12?
- CPC F28D7/12 is the Cooperative Patent Classification code for “the surrounding tube being closed at one end, e.g. return type (F28D7/14 takes precedence).”
- How many patents are filed under CPC F28D7/12 (the surrounding tube being closed at one end, e.g. return type (F28D7/14 takes precedence))?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC F28D7/12 growing?
- Publication counts under this code: 11 in 2024 vs 5 in 2025 (latest complete years).