Duct unit
US-2024094674-A1 · Mar 21, 2024 · US
for conducting air through the machine, e.g. cooling
for conducting air through the machine, e.g. cooling · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G03G2221/1645 |
| Official title | for conducting air through the machine, e.g. cooling |
| Display label | for conducting air through the machine, e.g. cooling |
| Total patents | 418 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 28 |
| 2016 | 39 |
| 2017 | 22 |
| 2018 | 26 |
| 2019 | 36 |
| 2020 | 32 |
| 2021 | 20 |
| 2022 | 53 |
| 2023 | 53 |
| 2024 | 42 |
| 2025 | 51 |
| 2026 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sheet cooling apparatus and image forming apparatus
US-2024012359-A1 · Jan 11, 2024 · US
Cooling device including air blower, and image forming apparatus including cooling device
US-2016378059-A1 · Dec 29, 2016 · US
Image formation system
US-2016378060-A1 · Dec 29, 2016 · US
Image forming apparatus
US-2016378058-A1 · Dec 29, 2016 · US
Image forming apparatus with control unit configured to reduce the air blown by a blower unit reaching an exposure unit
US-9523959-B2 · Dec 20, 2016 · US
Image forming apparatus including cooling mechanism with blowoff port
US-9507298-B2 · Nov 29, 2016 · US
Drive force transmission device and image forming apparatus
US-2016342137-A1 · Nov 24, 2016 · US
Cabinet structure, electronic equipment, and image forming apparatus
US-9494911-B2 · Nov 15, 2016 · US
Image forming apparatus that ensures cooling performance of toner container and downsized image forming apparatus
US-9488959-B2 · Nov 8, 2016 · US
Optional Device for Electrical Machine, and Electrical Machine
US-2016286669-A1 · Sep 29, 2016 · US
Option Device for Electrical Appliance
US-2016286668-A1 · Sep 29, 2016 · US
Optional device for electrical machine, and electrical machine
US-2016282806-A1 · Sep 29, 2016 · US
Cabinet structure, electronic equipment, and image forming apparatus
US-2016275931-A1 · Sep 22, 2016 · US
Fan bypass system for contamination control
US-9429910-B1 · Aug 30, 2016 · US
Image forming apparatus having fixing device and blower for the fixing device
US-9429886-B2 · Aug 30, 2016 · US
Cabinet structure, electronic equipment, and image forming apparatus
US-2016238984-A1 · Aug 18, 2016 · US
Image forming apparatus and structural member
US-9417601-B1 · Aug 16, 2016 · US
Image forming apparatus having partition configured to separate air flow and sheet feeding paths
US-9411275-B2 · Aug 9, 2016 · US
Image forming apparatus
US-9411309-B1 · Aug 9, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G03G2221/1645?
- CPC G03G2221/1645 is the Cooperative Patent Classification code for “for conducting air through the machine, e.g. cooling.”
- How many patents are filed under CPC G03G2221/1645 (for conducting air through the machine, e.g. cooling)?
- Our database includes 418 publications tagged with this CPC code.
- Is patent activity under CPC G03G2221/1645 growing?
- Publication counts under this code: 42 in 2024 vs 51 in 2025 (latest complete years).