Aftertreatment system for locomotive
US-12553372-B2 · Feb 17, 2026 · US
Arrangement or disposition of exhaust apparatus
Arrangement or disposition of exhaust apparatus · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B61C5/04 |
| Official title | Arrangement or disposition of exhaust apparatus |
| Display label | Arrangement or disposition of exhaust apparatus |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 2 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aftertreatment system for locomotive
US-2026036071-A1 · Feb 5, 2026 · US
Exhaust enclosure and thermal management system
US-2025334065-A1 · Oct 30, 2025 · US
System and method for a cab-mounted muffler assembly
US-12215612-B2 · Feb 4, 2025 · US
Method and systems for a fluidic variable turbocharger for an engine
US-11674410-B2 · Jun 13, 2023 · US
System for a combined spark arrestor and muffler assembly
US-11629621-B2 · Apr 18, 2023 · US
System and method for a cab-mounted muffler assembly
US-2022178298-A1 · Jun 9, 2022 · US
Oil carryover reduction system
US-11338829-B2 · May 24, 2022 · US
System for a combined spark arrestor and muffler assembly
US-2021404359-A1 · Dec 30, 2021 · US
After-treatment system for repower locomotives
US-11187128-B2 · Nov 30, 2021 · US
Method and systems for a fluidic variable turbocharger for an engine
US-2021301715-A1 · Sep 30, 2021 · US
After-Treatment System For Repower Locomotives
US-2021277816-A1 · Sep 9, 2021 · US
Method and systems for a variable geometry turbocharger for an engine
US-10907497-B2 · Feb 2, 2021 · US
Method and systems for a valve bridge for an engine
US-2020208543-A1 · Jul 2, 2020 · US
Method and systems for a variable geometry turbocharger for an engine
US-2020191012-A1 · Jun 18, 2020 · US
Oil carryover reduction system
US-2020148235-A1 · May 14, 2020 · US
Method for heating an operating agent, and an operating agent heating system
US-10364726-B2 · Jul 30, 2019 · US
Engine recovery system for power system
US-2019106130-A1 · Apr 11, 2019 · US
Device, method, and system for emissions control
US-10125648-B2 · Nov 13, 2018 · US
Power system having fuel-based cooling
US-10054085-B2 · Aug 21, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61C5/04?
- CPC B61C5/04 is the Cooperative Patent Classification code for “Arrangement or disposition of exhaust apparatus.”
- How many patents are filed under CPC B61C5/04 (Arrangement or disposition of exhaust apparatus)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC B61C5/04 growing?
- Publication counts under this code: 2 in 2023 vs 2 in 2025 (latest complete years).