Damping system for an e-charger
US-2018306209-A1 · Oct 25, 2018 · US
with rotary pumps (with cell-type pressure exchangers or the like F02B33/42)
with rotary pumps (with cell-type pressure exchangers or the like F02B33/42) · 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 | F02B33/34 |
| Official title | with rotary pumps (with cell-type pressure exchangers or the like F02B33/42) |
| Display label | with rotary pumps (with cell-type pressure exchangers or the like F02B33/42) |
| Total patents | 173 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 18 |
| 2017 | 16 |
| 2018 | 18 |
| 2019 | 27 |
| 2020 | 27 |
| 2021 | 17 |
| 2022 | 13 |
| 2023 | 9 |
| 2024 | 5 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for driving internal combustion engine, and air supply device
US-10107232-B2 · Oct 23, 2018 · US
Control device of compression self-ignition engine
US-2018283296-A1 · Oct 4, 2018 · US
Supercharged engine
US-10060337-B2 · Aug 28, 2018 · US
Electric supercharger
US-2018209330-A1 · Jul 26, 2018 · US
Supercharger-based twin charging system for an engine
US-2018171893-A1 · Jun 21, 2018 · US
Outboard motor
US-2018105249-A1 · Apr 19, 2018 · US
Compound engine assembly with common inlet
US-2018030883-A1 · Feb 1, 2018 · US
Turbocharger
US-2017363024-A1 · Dec 21, 2017 · US
Supercharger-based twin charging system for an engine
US-9840972-B2 · Dec 12, 2017 · US
Apparatus and method for engine control
US-2017350329-A1 · Dec 7, 2017 · US
Supercharger assembly
US-9835081-B2 · Dec 5, 2017 · US
Turbocharger
US-2017328269-A1 · Nov 16, 2017 · US
Compound engine assembly with common inlet
US-9797297-B2 · Oct 24, 2017 · US
Exhaust turbocharger
US-9759125-B2 · Sep 12, 2017 · US
Variable speed hybrid electric supercharger assembly and method of control of vehicle having same
US-9751411-B2 · Sep 5, 2017 · US
Supercharging Device for an Internal Combustion Engine, and Operating Method for the Supercharging Device
US-2017241328-A1 · Aug 24, 2017 · US
Straddle-type vehicle
US-2017226971-A1 · Aug 10, 2017 · US
Control device for vehicle, and control method for vehicle
US-2017218835-A1 · Aug 3, 2017 · US
Control system for vehicle drive system having supercharger and accessories
US-9656660-B2 · May 23, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B33/34?
- CPC F02B33/34 is the Cooperative Patent Classification code for “with rotary pumps (with cell-type pressure exchangers or the like F02B33/42).”
- How many patents are filed under CPC F02B33/34 (with rotary pumps (with cell-type pressure exchangers or the like F02B33/42))?
- Our database includes 173 publications tagged with this CPC code.
- Is patent activity under CPC F02B33/34 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).