Anti-rattle devices and turbocharger wastegate assemblies including the same
US-10156184-B2 · Dec 18, 2018 · US
Acoustic insulation
Acoustic insulation · 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 | F02B77/13 |
| Official title | Acoustic insulation |
| Display label | Acoustic insulation |
| Total patents | 191 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 17 |
| 2017 | 18 |
| 2018 | 27 |
| 2019 | 28 |
| 2020 | 15 |
| 2021 | 17 |
| 2022 | 19 |
| 2023 | 13 |
| 2024 | 14 |
| 2025 | 11 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Intake passage component for internal combustion engine
US-2018340499-A1 · Nov 29, 2018 · US
Oil pan and method for manufacturing oil pan
US-2018313240-A1 · Nov 1, 2018 · US
Sound-permeable metal plate and sound-absorbing composite plate using same
US-2018301133-A1 · Oct 18, 2018 · US
Engine cover having snap latch
US-2018291804-A1 · Oct 11, 2018 · US
Electrical power generation system with multiple path cooling
US-10079525-B2 · Sep 18, 2018 · US
Connector
US-2018245614-A1 · Aug 30, 2018 · US
Internal combustion engine
US-2018171863-A1 · Jun 21, 2018 · US
Engine-driven working machine housed in outer case with vibration isolating support
US-10001055-B2 · Jun 19, 2018 · US
Control system for a generator
US-9995210-B2 · Jun 12, 2018 · US
Engine and method of production of engine
US-9955562-B2 · Apr 24, 2018 · US
Apparatus and Method for Reducing Flow Noise in a Commercial Engine Vehicle
US-2018106188-A1 · Apr 19, 2018 · US
Engine cover arrangement
US-2018086288-A1 · Mar 29, 2018 · US
Apparatus for controlling engine noise reflecting engine vibration and driving conditions
US-9911405-B2 · Mar 6, 2018 · US
Sound absorbing and insulating material with improved heat resistance and moldability and method for manufacturing the same
US-9881599-B2 · Jan 30, 2018 · US
Sound insulation structure of internal combustion engine
US-2018003108-A1 · Jan 4, 2018 · US
Soft engine cover for intake manifold
US-9840989-B2 · Dec 12, 2017 · US
Apparatus for controlling engine noise reflecting engine vibration and driving conditions
US-2017330550-A1 · Nov 16, 2017 · US
Engine cover
US-9816460-B2 · Nov 14, 2017 · US
Generator for internal combustion engine
US-9810130-B2 · Nov 7, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B77/13?
- CPC F02B77/13 is the Cooperative Patent Classification code for “Acoustic insulation.”
- How many patents are filed under CPC F02B77/13 (Acoustic insulation)?
- Our database includes 191 publications tagged with this CPC code.
- Is patent activity under CPC F02B77/13 growing?
- Publication counts under this code: 14 in 2024 vs 11 in 2025 (latest complete years).