Positive displacement roots blower noise suppression
US-2024384718-A1 · Nov 21, 2024 · US
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Arrangements for supercharging the working space (similar arrangements for internal combustion engines F02B33/00, F02B37/00)
Arrangements for supercharging the working space (similar arrangements for internal combustion engines F02B33/00, F02B37/00) · 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 | F04C29/122 |
| Official title | {Arrangements for supercharging the working space (similar arrangements for internal combustion engines F02B33/00, F02B37/00)} |
| Display label | Arrangements for supercharging the working space (similar arrangements for internal combustion engines F02B33/00, F02B37/00) |
| Total patents | 18 |
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 | 4 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 3 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Positive displacement roots blower noise suppression
US-12060881-B2 · Aug 13, 2024 · US
Single-stage enthalpy enhancing rotary compressor and air conditioner having same
US-11971038-B2 · Apr 30, 2024 · US
Single-stage enthalpy enhancing rotary compressor and air conditioner having same
US-2023018817-A1 · Jan 19, 2023 · US
Positive displacement roots blower noise suppression
US-2022145885-A1 · May 12, 2022 · US
Rotor for a positive displacement compressor
US-10514036-B2 · Dec 24, 2019 · US
Supercharger with air vent pathway to engine
US-10302085-B2 · May 28, 2019 · US
Rotor for a positive displacement compressor
US-2019032660-A1 · Jan 31, 2019 · US
Bearing plate noise damper
US-2018274542-A1 · Sep 27, 2018 · US
Scroll compressor
US-9784271-B2 · Oct 10, 2017 · US
Roots-style blower with leakage mechanisms
US-9617998-B2 · Apr 11, 2017 · US
Rotary compressor
US-9512842-B2 · Dec 6, 2016 · US
Noise cancellation by phase-matching communicating ducts of roots-type blower and expander
US-2016003254-A1 · Jan 7, 2016 · US
Supercharger
US-2016003249-A1 · Jan 7, 2016 · US
Scroll compressor
US-2015316058-A1 · Nov 5, 2015 · US
Screw compressor
US-9086067-B2 · Jul 21, 2015 · US
Roots-style blower with leakage mechanisms
US-2015132171-A1 · May 14, 2015 · US
Roots fluid machine with reduced gas leakage
US-8936450-B2 · Jan 20, 2015 · US