Heat exchanger apparatus
US-11480146-B2 · Oct 25, 2022 · US
from steel or ferrous alloys
from steel or ferrous alloys · 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 | F28F21/082 |
| Official title | {from steel or ferrous alloys} |
| Display label | from steel or ferrous alloys |
| Total patents | 86 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 11 |
| 2019 | 11 |
| 2020 | 11 |
| 2021 | 4 |
| 2022 | 9 |
| 2023 | 8 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Low melting iron based braze filler metals for heat exchanger applications
US-2022316430-A1 · Oct 6, 2022 · US
Heat exchanger for a liquefied natural gas facility
US-11435138-B2 · Sep 6, 2022 · US
Ferritic steel parts in urea plants
US-2022251032-A1 · Aug 11, 2022 · US
Shell and tube heat exchangers
US-11306972-B2 · Apr 19, 2022 · US
Heat exchange apparatus and method
US-2021389061-A1 · Dec 16, 2021 · US
Cooling Element And Method Of Manufacturing A Cooling Element
US-2021315130-A1 · Oct 7, 2021 · US
Vapor chamber structure
US-11060799-B1 · Jul 13, 2021 · US
Heat exchanger with integral anti-icing
US-11035624-B2 · Jun 15, 2021 · US
Outdoor unit for an air-conditioning apparatus having L-shaped heat exchanger and placement plate for same
US-10816227-B2 · Oct 27, 2020 · US
Indirect heat exchanger having circuit tubes with varying dimensions
US-2020256621-A1 · Aug 13, 2020 · US
Use of a composite material for heat management
US-10739080-B2 · Aug 11, 2020 · US
Heat exchanger
US-2020166280-A1 · May 28, 2020 · US
Implementing contained thermal interface material for pluggable applications
US-10667433-B2 · May 26, 2020 · US
Indirect heat exchanger having circuit tubes with varying dimensions
US-10655918-B2 · May 19, 2020 · US
Heat exchanger apparatus
US-2020141376-A1 · May 7, 2020 · US
Method for producing a rifled tube
US-10632521-B2 · Apr 28, 2020 · US
Stainless steel and method of manufacturing the same
US-10619950-B2 · Apr 14, 2020 · US
Printed circuit heat exchanger and heat exchange device including the same
US-2020088475-A1 · Mar 19, 2020 · US
Heat exchanger with integral anti-icing
US-2020018559-A1 · Jan 16, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F21/082?
- CPC F28F21/082 is the Cooperative Patent Classification code for “from steel or ferrous alloys.”
- How many patents are filed under CPC F28F21/082 (from steel or ferrous alloys)?
- Our database includes 86 publications tagged with this CPC code.
- Is patent activity under CPC F28F21/082 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).