Personal air sampling pump assembly
US-12492694-B2 · Dec 9, 2025 · US
with direct action on the fluid flow using absorptive materials
with direct action on the fluid flow using absorptive materials · 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 | F04B39/005 |
| Official title | {with direct action on the fluid flow using absorptive materials} |
| Display label | with direct action on the fluid flow using absorptive materials |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Inlet silencer for a volumetric compressor and volumetric compressor equipped with it
US-2025369431-A1 · Dec 4, 2025 · US
Bead gasket
US-12467443-B2 · Nov 11, 2025 · US
Fan housing for a compressor installation
US-2025188952-A1 · Jun 12, 2025 · US
Apparatus for damping pressure pulsation for a compressor of a gaseous fluid
US-12320345-B2 · Jun 3, 2025 · US
Compressor and manufacturing method thereof
US-11976650-B2 · May 7, 2024 · US
Air compressor
US-11788526-B2 · Oct 17, 2023 · US
Miniature blower
US-11746769-B2 · Sep 5, 2023 · US
Air compressor
US-2023038911-A1 · Feb 9, 2023 · US
Pneumatic pump silencer, pneumatic pump comprising such a silencer and coating product spraying installation comprising at least one such pneumatic pump
US-11572870-B2 · Feb 7, 2023 · US
Linear compressor
US-11566612-B2 · Jan 31, 2023 · US
An apparatus for damping pressure pulsation for a compressor of a gaseous fluid
US-2023022916-A1 · Jan 26, 2023 · US
Personal air sampling pump assembly
US-2022412338-A1 · Dec 29, 2022 · US
Air compressor
US-11512692-B2 · Nov 29, 2022 · US
Personal air sampling pump assembly with diaphragm damping portion
US-11434894-B2 · Sep 6, 2022 · US
Silencer and ejector in which silencer is used
US-11225889-B2 · Jan 18, 2022 · US
Miniature blower
US-2021172430-A1 · Jun 10, 2021 · US
Bead gasket
US-2021164460-A1 · Jun 3, 2021 · US
Compressor and manufacturing method thereof
US-2021140424-A1 · May 13, 2021 · US
Personal air sampling pump assembly
US-2020392955-A1 · Dec 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B39/005?
- CPC F04B39/005 is the Cooperative Patent Classification code for “with direct action on the fluid flow using absorptive materials.”
- How many patents are filed under CPC F04B39/005 (with direct action on the fluid flow using absorptive materials)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC F04B39/005 growing?
- Publication counts under this code: 1 in 2024 vs 5 in 2025 (latest complete years).