Valve assembly
US-2018326837-A1 · Nov 15, 2018 · US
Silencing apparatus characterised by method of silencing
Silencing apparatus characterised by method of silencing · 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 | F01N1/00 |
| Official title | Silencing apparatus characterised by method of silencing |
| Display label | Silencing apparatus characterised by method of silencing |
| Total patents | 238 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 20 |
| 2017 | 24 |
| 2018 | 25 |
| 2019 | 33 |
| 2020 | 32 |
| 2021 | 19 |
| 2022 | 20 |
| 2023 | 22 |
| 2024 | 13 |
| 2025 | 12 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Exhaust gas treatment device
US-10113472-B2 · Oct 30, 2018 · US
Method of generating a drive signal for a loudspeaker arranged in a motor vehicle, an exhaust system for an engine and a sound system for a passenger cell
US-9990913-B2 · Jun 5, 2018 · US
Air Gap-Insulated Muffler
US-2017350301-A1 · Dec 7, 2017 · US
An arrangement for treating exhaust gases of an internal combustion piston engine in a marine vessel and method of operating an arrangement for treating exhaust gases
US-2017335742-A1 · Nov 23, 2017 · US
Exhaust system of saddle-ride type vehicle
US-9815521-B2 · Nov 14, 2017 · US
Method of determining arrangement position of spherical joint for connecting exhaust pipes to each other in exhaust system, and exhaust system
US-2017314450-A1 · Nov 2, 2017 · US
Hedge Trimmer
US-2017303473-A1 · Oct 26, 2017 · US
Method and system for exhaust gas heat recovery
US-2017292431-A1 · Oct 12, 2017 · US
Heat exchanger for a rankine cycle in a vehicle muffler
US-2017234265-A1 · Aug 17, 2017 · US
Muffler for an exhaust system
US-2017218830-A1 · Aug 3, 2017 · US
Muffler and its corresponding manufacturing method
US-9719404-B2 · Aug 1, 2017 · US
Engine-driven generator
US-9714599-B2 · Jul 25, 2017 · US
Method of Generating a Drive Signal for a Loudspeaker Arranged in a Motor Vehicle, an Exhaust System for an Engine and a Sound System for a Passenger Cell
US-2017206883-A1 · Jul 20, 2017 · US
Exhaust device of motorcycle
US-9708963-B2 · Jul 18, 2017 · US
Method and system for exhaust gas heat recovery
US-9689295-B1 · Jun 27, 2017 · US
Lawn care vehicle
US-2017156263-A1 · Jun 8, 2017 · US
Modular discharge silencer for vehicle-mounted compressor
US-9657732-B2 · May 23, 2017 · US
Tailpipe for muffler of vehicle having multiple inner pipes
US-9638087-B2 · May 2, 2017 · US
Package-storage type engine generator
US-2017107901-A1 · Apr 20, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N1/00?
- CPC F01N1/00 is the Cooperative Patent Classification code for “Silencing apparatus characterised by method of silencing.”
- How many patents are filed under CPC F01N1/00 (Silencing apparatus characterised by method of silencing)?
- Our database includes 238 publications tagged with this CPC code.
- Is patent activity under CPC F01N1/00 growing?
- Publication counts under this code: 13 in 2024 vs 12 in 2025 (latest complete years).